active terms N mark cons recip sqr N terms s N active sqr 0 mark 0 active sqr s X mark s add sqr X dbl X active dbl 0 mark 0 active dbl s X mark s s dbl X active add 0 X mark X active add s X Y mark s add X Y active first 0 X mark nil active first s X cons Y Z mark cons Y first X Z active terms X terms active X active cons X1 X2 cons active X1 X2 active recip X recip active X active sqr X sqr active X active add X1 X2 add active X1 X2 active add X1 X2 add X1 active X2 active dbl X dbl active X active first X1 X2 first active X1 X2 active first X1 X2 first X1 active X2 terms mark X mark terms X cons mark X1 X2 mark cons X1 X2 recip mark X mark recip X sqr mark X mark sqr X add mark X1 X2 mark add X1 X2 add X1 mark X2 mark add X1 X2 dbl mark X mark dbl X first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 proper terms X terms proper X proper cons X1 X2 cons proper X1 proper X2 proper recip X recip proper X proper sqr X sqr proper X proper s X s proper X proper 0 ok 0 proper add X1 X2 add proper X1 proper X2 proper dbl X dbl proper X proper first X1 X2 first proper X1 proper X2 proper nil ok nil terms ok X ok terms X cons ok X1 ok X2 ok cons X1 X2 recip ok X ok recip X sqr ok X ok sqr X s ok X ok s X add ok X1 ok X2 ok add X1 X2 dbl ok X ok dbl X first ok X1 ok X2 ok first X1 X2 top mark X top proper X top ok X top active X 2.2 proper cons X1 X2 cons proper X1 proper X2 proper terms X terms proper X active add X1 X2 active X1 active add s X Y add X Y active terms N cons recip sqr N terms s N proper add X1 X2 add proper X1 proper X2 dbl ok X dbl X active dbl s X dbl X active terms X terms active X active first X1 X2 first X1 active X2 proper add X1 X2 proper X1 proper s X proper X active add X1 X2 add X1 active X2 proper add X1 X2 proper X2 active first X1 X2 active X2 proper first X1 X2 proper X2 active dbl X active X active terms X active X proper dbl X proper X recip mark X recip X first mark X1 X2 first X1 X2 active terms N recip sqr N active dbl s X s dbl X active first X1 X2 active X1 terms ok X terms X s ok X s X top ok X top active X proper first X1 X2 proper X1 active recip X recip active X active terms N s N first ok X1 ok X2 first X1 X2 sqr mark X sqr X active terms N terms s N top ok X active X proper recip X proper X proper first X1 X2 first proper X1 proper X2 recip ok X recip X active sqr s X s add sqr X dbl X proper recip X recip proper X proper s X s proper X first X1 mark X2 first X1 X2 active recip X active X active cons X1 X2 active X1 top mark X top proper X active dbl s X s s dbl X sqr ok X sqr X active sqr s X sqr X cons mark X1 X2 cons X1 X2 active add X1 X2 active X2 proper dbl X dbl proper X proper terms X proper X active sqr s X dbl X active add X1 X2 add active X1 X2 add mark X1 X2 add X1 X2 active add s X Y s add X Y proper sqr X proper X active dbl X dbl active X active first s X cons Y Z cons Y first X Z dbl mark X dbl X active cons X1 X2 cons active X1 X2 active sqr s X add sqr X dbl X proper sqr X sqr proper X active terms N sqr N cons ok X1 ok X2 cons X1 X2 add X1 mark X2 add X1 X2 active sqr X active X proper cons X1 X2 proper X1 add ok X1 ok X2 add X1 X2 terms mark X terms X top mark X proper X active sqr X sqr active X proper cons X1 X2 proper X2 active first X1 X2 first active X1 X2 active first s X cons Y Z first X Z true top ok X top active X top mark X top proper X true cons 2 0 s 1 16674 recip 1 1 38765 recip 1 0 dbl 1 1 15943 top 1 0 dbl 1 0 terms 1 0 top 1 1 0 sqr 1 0 proper 1 1 0 ok 1 1 0 0 0 1 s 1 0 first 2 0 nil 0 240 mark 1 1 1 first 2 1 2 5900 proper 1 0 active 1 1 0 cons 2 1 39195 active 1 0 add 2 0 add 2 1 2 28872 sqr 1 1 1 terms 1 1 77962 top ok X top active X active first X1 X2 first X1 active X2 active dbl 0 mark 0 active add X1 X2 add X1 active X2 active first 0 X mark nil active terms N mark cons recip sqr N terms s N active sqr s X mark s add sqr X dbl X active dbl X dbl active X recip mark X mark recip X proper first X1 X2 first proper X1 proper X2 first mark X1 X2 mark first X1 X2 terms mark X mark terms X proper s X s proper X active first X1 X2 first active X1 X2 first X1 mark X2 mark first X1 X2 proper add X1 X2 add proper X1 proper X2 sqr mark X mark sqr X proper terms X terms proper X dbl ok X ok dbl X active dbl s X mark s s dbl X proper 0 ok 0 active terms X terms active X cons ok X1 ok X2 ok cons X1 X2 active add s X Y mark s add X Y cons mark X1 X2 mark cons X1 X2 dbl mark X mark dbl X proper recip X recip proper X active add X1 X2 add active X1 X2 proper sqr X sqr proper X active recip X recip active X first ok X1 ok X2 ok first X1 X2 add mark X1 X2 mark add X1 X2 add X1 mark X2 mark add X1 X2 active cons X1 X2 cons active X1 X2 active first s X cons Y Z mark cons Y first X Z active sqr X sqr active X recip ok X ok recip X active add 0 X mark X terms ok X ok terms X proper nil ok nil sqr ok X ok sqr X s ok X ok s X proper dbl X dbl proper X proper cons X1 X2 cons proper X1 proper X2 add ok X1 ok X2 ok add X1 X2 active sqr 0 mark 0 top ok X top active X true cons 2 0 s 1 1 1 recip 1 1 1 recip 1 0 dbl 1 1 1 top 1 0 dbl 1 0 terms 1 0 top 1 1 0 sqr 1 0 proper 1 1 11669 ok 1 1 11669 0 0 1 s 1 0 first 2 0 nil 0 30137 mark 1 1 first 2 2 26816 proper 1 0 active 1 1 1 cons 2 1 1 active 1 0 add 2 0 add 2 2 9643 sqr 1 1 1 terms 1 1 1 active first X1 X2 first X1 active X2 active dbl 0 mark 0 active add X1 X2 add X1 active X2 active first 0 X mark nil active terms N mark cons recip sqr N terms s N active sqr s X mark s add sqr X dbl X active dbl X dbl active X recip mark X mark recip X proper first X1 X2 first proper X1 proper X2 first mark X1 X2 mark first X1 X2 terms mark X mark terms X proper s X s proper X active first X1 X2 first active X1 X2 first X1 mark X2 mark first X1 X2 proper add X1 X2 add proper X1 proper X2 sqr mark X mark sqr X proper terms X terms proper X dbl ok X ok dbl X active dbl s X mark s s dbl X proper 0 ok 0 active terms X terms active X cons ok X1 ok X2 ok cons X1 X2 active add s X Y mark s add X Y cons mark X1 X2 mark cons X1 X2 dbl mark X mark dbl X proper recip X recip proper X active add X1 X2 add active X1 X2 proper sqr X sqr proper X active recip X recip active X first ok X1 ok X2 ok first X1 X2 add mark X1 X2 mark add X1 X2 add X1 mark X2 mark add X1 X2 active cons X1 X2 cons active X1 X2 active first s X cons Y Z mark cons Y first X Z active sqr X sqr active X recip ok X ok recip X active add 0 X mark X terms ok X ok terms X proper nil ok nil sqr ok X ok sqr X s ok X ok s X proper dbl X dbl proper X proper cons X1 X2 cons proper X1 proper X2 add ok X1 ok X2 ok add X1 X2 active sqr 0 mark 0 top mark X proper X false proper cons X1 X2 proper X2 proper recip X proper X proper cons X1 X2 proper X1 proper first X1 X2 proper X1 proper dbl X proper X proper sqr X proper X proper first X1 X2 proper X2 proper add X1 X2 proper X2 proper s X proper X proper add X1 X2 proper X1 proper terms X proper X true cons 2 0 s 1 1 1 recip 1 1 23641 recip 1 0 dbl 1 1 1 top 1 0 dbl 1 0 terms 1 0 top 1 0 sqr 1 0 proper 1 1 ok 1 1 1 0 0 1 s 1 0 first 2 0 nil 0 30137 mark 1 16147 first 2 1 2 1 proper 1 1 0 active 1 1 16143 cons 2 1 2 1 active 1 0 add 2 0 add 2 1 2 1 sqr 1 1 1 terms 1 1 3 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 cons ok X1 ok X2 ok cons X1 X2 cons mark X1 X2 mark cons X1 X2 first ok X1 ok X2 ok first X1 X2 proper dbl X dbl proper X false proper sqr X sqr proper X false proper recip X recip proper X false proper add X1 X2 add proper X1 proper X2 false proper s X s proper X false proper first X1 X2 first proper X1 proper X2 false top ok X active X false proper terms X terms proper X false proper cons X1 X2 cons proper X1 proper X2 false active recip X active X active sqr X active X active first X1 X2 active X1 active dbl X active X active terms X active X active first X1 X2 active X2 active add X1 X2 active X2 active add X1 X2 active X1 active cons X1 X2 active X1 true cons 2 0 s 1 1 1 recip 1 1 1 recip 1 0 dbl 1 1 1 top 1 0 dbl 1 0 terms 1 0 top 1 0 sqr 1 0 proper 1 1 ok 1 1 1 0 0 2 s 1 0 first 2 0 nil 0 30137 mark 1 5 first 2 1 2 1 proper 1 0 active 1 1 1 cons 2 1 2 1 active 1 1 0 add 2 0 add 2 1 2 1 sqr 1 1 1 terms 1 1 3 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 cons ok X1 ok X2 ok cons X1 X2 cons mark X1 X2 mark cons X1 X2 first ok X1 ok X2 ok first X1 X2 active sqr X sqr active X false active first s X cons Y Z cons Y first X Z false active first s X cons Y Z first X Z false active cons X1 X2 cons active X1 X2 false active recip X recip active X false active add X1 X2 add active X1 X2 false active add s X Y s add X Y false active add s X Y add X Y false active terms X terms active X false active dbl s X s s dbl X false active dbl s X s dbl X false active dbl s X dbl X false active first X1 X2 first active X1 X2 false active dbl X dbl active X false active sqr s X s add sqr X dbl X false active sqr s X add sqr X dbl X false active sqr s X sqr X false active sqr s X dbl X false dbl mark X dbl X dbl ok X dbl X true cons 2 0 s 1 1 1 recip 1 1 1 recip 1 0 dbl 1 1 1 top 1 0 dbl 1 1 0 terms 1 0 top 1 0 sqr 1 0 proper 1 1 ok 1 1 49 0 0 1 s 1 0 first 2 0 nil 0 6389 mark 1 1 4 first 2 1 2 1 proper 1 0 active 1 1 1 cons 2 1 2 1 active 1 0 add 2 0 add 2 1 2 1 sqr 1 1 1 terms 1 1 1 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 cons ok X1 ok X2 ok cons X1 X2 cons mark X1 X2 mark cons X1 X2 first ok X1 ok X2 ok first X1 X2 active terms N cons recip sqr N terms s N false cons ok X1 ok X2 cons X1 X2 cons mark X1 X2 cons X1 X2 true cons 2 1 0 s 1 1 10392 recip 1 1 5744 recip 1 0 dbl 1 1 9133 top 1 0 dbl 1 0 terms 1 0 top 1 0 sqr 1 0 proper 1 1 ok 1 1 1 0 0 38312 s 1 0 first 2 0 nil 0 6389 mark 1 1 80049 first 2 1 2 1 proper 1 0 active 1 1 1 cons 2 1 2 1 active 1 0 add 2 0 add 2 1 2 41735 sqr 1 1 18524 terms 1 1 1 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 cons ok X1 ok X2 ok cons X1 X2 cons mark X1 X2 mark cons X1 X2 first ok X1 ok X2 ok first X1 X2 active terms N recip sqr N false recip ok X recip X recip mark X recip X true cons 2 0 s 1 1 1 recip 1 1 1 recip 1 1 0 dbl 1 1 1 top 1 0 dbl 1 0 terms 1 0 top 1 0 sqr 1 0 proper 1 1 ok 1 1 1 0 0 1 s 1 0 first 2 0 nil 0 1 mark 1 1 18526 first 2 1 2 1 proper 1 0 active 1 1 1 cons 2 1 2 1 active 1 0 add 2 0 add 2 1 2 4592 sqr 1 1 1 terms 1 1 1 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 cons ok X1 ok X2 ok cons X1 X2 cons mark X1 X2 mark cons X1 X2 first ok X1 ok X2 ok first X1 X2 active terms N sqr N false sqr mark X sqr X sqr ok X sqr X true cons 2 0 s 1 1 1 recip 1 1 12490 recip 1 0 dbl 1 1 1 top 1 0 dbl 1 0 terms 1 0 top 1 0 sqr 1 1 0 proper 1 1 ok 1 1 1 0 0 1 s 1 0 first 2 0 nil 0 1 mark 1 1 4 first 2 1 2 1 proper 1 0 active 1 1 1 cons 2 1 2 1 active 1 0 add 2 0 add 2 1 2 1 sqr 1 1 1 terms 1 1 62970 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 cons ok X1 ok X2 ok cons X1 X2 cons mark X1 X2 mark cons X1 X2 first ok X1 ok X2 ok first X1 X2 active terms N terms s N false terms mark X terms X terms ok X terms X true cons 2 0 s 1 1 1 recip 1 1 1 recip 1 0 dbl 1 1 1 top 1 0 dbl 1 0 terms 1 1 0 top 1 0 sqr 1 0 proper 1 1 ok 1 1 1 0 0 1 s 1 0 first 2 0 nil 0 26962 mark 1 1 4 first 2 1 2 1 proper 1 0 active 1 1 1 cons 2 1 2 1 active 1 0 add 2 0 add 2 1 2 1 sqr 1 1 1 terms 1 1 1 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 cons ok X1 ok X2 ok cons X1 X2 cons mark X1 X2 mark cons X1 X2 first ok X1 ok X2 ok first X1 X2 active terms N s N false s ok X s X true cons 2 0 s 1 1 15530 recip 1 1 1 recip 1 0 dbl 1 1 2089 top 1 0 dbl 1 0 terms 1 0 top 1 0 sqr 1 0 proper 1 1 ok 1 1 1 0 0 1 s 1 1 0 first 2 0 nil 0 1 mark 1 1 55447 first 2 1 2 1 proper 1 0 active 1 1 1 cons 2 1 2 1 active 1 0 add 2 0 add 2 1 2 55444 sqr 1 1 19454 terms 1 1 54920 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 cons ok X1 ok X2 ok cons X1 X2 cons mark X1 X2 mark cons X1 X2 first ok X1 ok X2 ok first X1 X2 active add X1 X2 add X1 active X2 false add ok X1 ok X2 add X1 X2 add X1 mark X2 add X1 X2 add mark X1 X2 add X1 X2 true cons 2 0 s 1 1 1 recip 1 1 1 recip 1 0 dbl 1 1 1 top 1 0 dbl 1 0 terms 1 0 top 1 0 sqr 1 0 proper 1 1 ok 1 1 1 0 0 1 s 1 0 first 2 0 nil 0 26064 mark 1 1 47950 first 2 1 2 1 proper 1 0 active 1 1 47947 cons 2 1 2 1 active 1 0 add 2 1 0 add 2 1 2 1 sqr 1 1 1 terms 1 1 1 add X1 mark X2 add X1 X2 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 cons ok X1 ok X2 ok cons X1 X2 cons mark X1 X2 mark cons X1 X2 first ok X1 ok X2 ok first X1 X2 add X1 mark X2 add X1 X2 true cons 2 0 s 1 1 2 recip 1 1 1 recip 1 0 dbl 1 1 1 top 1 0 dbl 1 0 terms 1 0 top 1 0 sqr 1 0 proper 1 1 ok 1 1 1 0 0 1 s 1 0 first 2 0 nil 0 1 mark 1 1 4 first 2 1 2 1 proper 1 0 active 1 1 1 cons 2 1 2 1 active 1 0 add 2 2 0 add 2 1 2 1 sqr 1 1 1 terms 1 1 1 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 cons ok X1 ok X2 ok cons X1 X2 cons mark X1 X2 mark cons X1 X2 first ok X1 ok X2 ok first X1 X2 active first X1 X2 first X1 active X2 false first X1 mark X2 first X1 X2 first ok X1 ok X2 first X1 X2 first mark X1 X2 first X1 X2 true cons 2 0 s 1 1 1 recip 1 1 1 recip 1 0 dbl 1 1 1 top 1 0 dbl 1 0 terms 1 0 top 1 0 sqr 1 0 proper 1 1 ok 1 1 1 0 0 13644 s 1 0 first 2 1 0 nil 0 1 mark 1 1 13647 first 2 1 2 1 proper 1 0 active 1 1 1 cons 2 1 2 1 active 1 0 add 2 0 add 2 1 2 1 sqr 1 1 1 terms 1 1 1 first X1 mark X2 first X1 X2 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 cons ok X1 ok X2 ok cons X1 X2 cons mark X1 X2 mark cons X1 X2 first ok X1 ok X2 ok first X1 X2 first X1 mark X2 first X1 X2 true cons 2 0 s 1 1 recip 1 1 6274 recip 1 0 dbl 1 1 14396 top 1 0 dbl 1 0 terms 1 0 top 1 0 sqr 1 0 proper 1 1 1 ok 1 1 2 0 0 2061 s 1 0 first 2 2 0 nil 0 23048 mark 1 1 2 first 2 1 2 1 proper 1 0 active 1 1 cons 2 1 1 active 1 0 add 2 0 add 2 2 29824 sqr 1 1 28588 terms 1 1 1 first mark X1 X2 mark first X1 X2 first X1 mark X2 mark first X1 X2 dbl ok X ok dbl X dbl mark X mark dbl X first ok X1 ok X2 ok first X1 X2 NaTT certifiable-1.6