active eq 0 0 mark true active eq s X s Y mark eq X Y active eq X Y mark false active inf X mark cons X inf s X active take 0 X mark nil active take s X cons Y L mark cons Y take X L active length nil mark 0 active length cons X L mark s length L active inf X inf active X active take X1 X2 take active X1 X2 active take X1 X2 take X1 active X2 active length X length active X inf mark X mark inf X take mark X1 X2 mark take X1 X2 take X1 mark X2 mark take X1 X2 length mark X mark length X proper eq X1 X2 eq proper X1 proper X2 proper 0 ok 0 proper true ok true proper s X s proper X proper false ok false proper inf X inf proper X proper cons any X1 X2 cons any any proper X1 any proper X2 proper take X1 X2 take proper X1 proper X2 proper nil ok nil proper length X length proper X eq ok X1 ok X2 ok eq X1 X2 s ok X ok s X inf ok X ok inf X cons ok X1 ok X2 ok cons X1 X2 take ok X1 ok X2 ok take X1 X2 length ok X ok length X top mark X top proper X top ok X top active X any X s X any proper X any any any X 2.2 inf ok X inf X any proper X any any any X top mark X top proper X top ok X active X length mark X length X proper length X proper X proper length X length proper X proper eq X1 X2 eq proper X1 proper X2 active length cons X L s length L active length cons X L length L proper eq X1 X2 proper X1 inf mark X inf X length ok X length X active inf X inf s X proper take X1 X2 proper X2 active take X1 X2 take X1 active X2 proper take X1 X2 take proper X1 proper X2 cons ok X1 ok X2 cons X1 X2 take mark X1 X2 take X1 X2 any proper X any X proper take X1 X2 proper X1 s ok X s X proper cons any X1 X2 cons any any proper X1 any proper X2 top mark X proper X active inf X s X take X1 mark X2 take X1 X2 proper s X s proper X active length X length active X active inf X inf active X proper eq X1 X2 proper X2 active take X1 X2 active X2 proper inf X proper X active take s X cons Y L take X L any proper X any any X active take X1 X2 active X1 take ok X1 ok X2 take X1 X2 top ok X top active X active take X1 X2 take active X1 X2 proper cons any X1 X2 proper X1 proper inf X inf proper X proper cons any X1 X2 proper X2 proper s X proper X eq ok X1 ok X2 eq X1 X2 active length X active X proper cons any X1 X2 any proper X1 any X s X active eq s X s Y eq X Y active inf X active X proper cons any X1 X2 any any proper X1 active take s X cons Y L cons Y take X L active inf X cons X inf s X proper cons any X1 X2 any proper X2 true top ok X top active X top mark X top proper X true 2 1 cons 2 0 0 s 1 1 0 0 0 1 32714 50571 take 2 0 0 take 2 0 0 0 1 1 0 0 0 1 2 0 3 top 1 0 0 eq 2 0 1 0 0 1 0 1 0 0 2 1 23127 any 1 0 0 1 0 1 32713 20485 false 0 0 1 top 1 0 0 1 0 1 0 0 any 1 0 0 true 0 1 3106 eq 2 0 0 proper 1 1 0 0 ok 1 1 0 0 0 0 1 1 s 1 0 0 nil 0 0 2 mark 1 0 1 0 1 1 0 2 proper 1 0 0 inf 1 0 0 active 1 0 0 0 1 1 1 0 cons 2 17962 83285 active 1 0 0 length 1 0 0 0 1 1 0 2 length 1 0 0 inf 1 0 0 0 1 1 0 101249 top ok X top active X proper 0 ok 0 active inf X mark cons X inf s X take X1 mark X2 mark take X1 X2 active length cons X L mark s length L active eq 0 0 mark true active eq X Y mark false length mark X mark length X proper false ok false proper length X length proper X proper true ok true length ok X ok length X proper eq X1 X2 eq proper X1 proper X2 eq ok X1 ok X2 ok eq X1 X2 proper inf X inf proper X s ok X ok s X active take 0 X mark nil active take X1 X2 take active X1 X2 active length nil mark 0 proper s X s proper X proper nil ok nil cons ok X1 ok X2 ok cons X1 X2 take mark X1 X2 mark take X1 X2 take ok X1 ok X2 ok take X1 X2 active length X length active X proper cons any X1 X2 cons any any proper X1 any proper X2 proper take X1 X2 take proper X1 proper X2 active take X1 X2 take X1 active X2 active inf X inf active X inf mark X mark inf X active take s X cons Y L mark cons Y take X L inf ok X ok inf X active eq s X s Y mark eq X Y top ok X top active X true cons 2 0 s 1 1 0 take 2 0 take 2 1 1 top 1 0 eq 2 2 20912 any 1 1 0 false 0 29161 top 1 1 0 any 1 0 true 0 47909 eq 2 0 proper 1 1 2 ok 1 1 2 0 0 1 s 1 0 nil 0 23467 mark 1 1 proper 1 0 inf 1 0 active 1 1 1 cons 2 1 977 active 1 0 length 1 1 34296 length 1 0 inf 1 1 3824 proper 0 ok 0 active inf X mark cons X inf s X take X1 mark X2 mark take X1 X2 active length cons X L mark s length L active eq 0 0 mark true active eq X Y mark false length mark X mark length X proper false ok false any proper X any any any X proper length X length proper X proper true ok true length ok X ok length X proper eq X1 X2 eq proper X1 proper X2 eq ok X1 ok X2 ok eq X1 X2 proper inf X inf proper X s ok X ok s X active take 0 X mark nil active take X1 X2 take active X1 X2 active length nil mark 0 proper s X s proper X proper nil ok nil cons ok X1 ok X2 ok cons X1 X2 take mark X1 X2 mark take X1 X2 take ok X1 ok X2 ok take X1 X2 active length X length active X proper cons any X1 X2 cons any any proper X1 any proper X2 proper take X1 X2 take proper X1 proper X2 active take X1 X2 take X1 active X2 active inf X inf active X inf mark X mark inf X active take s X cons Y L mark cons Y take X L any X s X inf ok X ok inf X active eq s X s Y mark eq X Y top mark X proper X false proper take X1 X2 proper X1 proper s X proper X proper take X1 X2 proper X2 proper cons any X1 X2 proper X2 proper cons any X1 X2 proper X1 proper eq X1 X2 proper X1 proper inf X proper X proper length X proper X proper eq X1 X2 proper X2 true cons 2 0 s 1 1 1 take 2 0 take 2 1 2 1 top 1 0 eq 2 1 2 1 any 1 1 0 false 0 8573 top 1 0 any 1 0 true 0 28652 eq 2 0 proper 1 8822 ok 1 1 39707 0 0 1 s 1 0 nil 0 1 mark 1 4934 proper 1 1 0 inf 1 0 active 1 1 4930 cons 2 1 2 1 active 1 0 length 1 1 1 length 1 0 inf 1 1 2 proper take X1 X2 take proper X1 proper X2 false proper cons any X1 X2 cons any any proper X1 any proper X2 false proper cons any X1 X2 any any proper X1 false proper cons any X1 X2 any proper X1 false proper cons any X1 X2 any proper X2 false proper s X s proper X false proper inf X inf proper X false proper eq X1 X2 eq proper X1 proper X2 false proper length X length proper X false top ok X active X false active inf X active X active length X active X active take X1 X2 active X1 active take X1 X2 active X2 true cons 2 0 s 1 1 1 take 2 0 take 2 1 2 1 top 1 0 eq 2 1 2 1 any 1 1 0 false 0 8822 top 1 0 any 1 0 true 0 8822 eq 2 0 proper 1 8822 ok 1 1 1 0 0 8822 s 1 0 nil 0 8822 mark 1 17647 proper 1 0 inf 1 0 active 1 1 1 cons 2 2 8562 active 1 1 0 length 1 1 1 length 1 0 inf 1 1 1 active eq s X s Y eq X Y false eq ok X1 ok X2 eq X1 X2 true cons 2 0 s 1 1 1 take 2 0 take 2 1 2 1 top 1 0 eq 2 1 2 1 any 1 1 0 false 0 1800 top 1 0 any 1 0 true 0 1 eq 2 1 0 proper 1 1 ok 1 1 1 0 0 1 s 1 0 nil 0 8623 mark 1 17647 proper 1 0 inf 1 0 active 1 1 1 cons 2 2 1 active 1 0 length 1 1 1 length 1 0 inf 1 1 1 active take s X cons Y L cons Y take X L false active take s X cons Y L take X L false active inf X inf active X false active take X1 X2 take X1 active X2 false active take X1 X2 take active X1 X2 false take X1 mark X2 take X1 X2 take mark X1 X2 take X1 X2 take ok X1 ok X2 take X1 X2 true cons 2 0 s 1 1 1 take 2 1 2 0 take 2 1 2 1 top 1 0 eq 2 1 2 1 any 1 1 0 false 0 1 top 1 0 any 1 0 true 0 1 eq 2 0 proper 1 1 ok 1 1 1 0 0 1 s 1 0 nil 0 1 mark 1 1 17647 proper 1 0 inf 1 0 active 1 1 1 cons 2 2 1 active 1 0 length 1 1 1 length 1 0 inf 1 1 35261 active length cons X L s length L false active length cons X L length L false active inf X cons X inf s X false cons ok X1 ok X2 cons X1 X2 true cons 2 1 0 s 1 1 1 take 2 0 take 2 1 2 1 top 1 0 eq 2 1 2 1 any 1 1 0 false 0 26784 top 1 0 any 1 0 true 0 1 eq 2 0 proper 1 1 ok 1 1 1 0 0 1 s 1 0 nil 0 1 mark 1 1 4 proper 1 0 inf 1 0 active 1 1 1 cons 2 2 1 active 1 0 length 1 1 1 length 1 0 inf 1 1 1 active inf X inf s X false active inf X s X false any proper X any X any proper X any any X any proper X any any any X true cons 2 0 s 1 1 take 2 0 take 2 2 1 top 1 0 eq 2 1 0 any 1 1 false 0 1 top 1 0 any 1 1 0 true 0 43313 eq 2 0 proper 1 1 2 ok 1 1 0 0 0 1 s 1 0 nil 0 0 mark 1 1 3 proper 1 0 inf 1 0 active 1 1 1 cons 2 1 2 1 active 1 0 length 1 1 1 length 1 0 inf 1 1 1 any proper X any any any X s ok X ok s X any X s X any X s X false s ok X s X true cons 2 0 s 1 1 0 take 2 0 take 2 1 1 top 1 0 eq 2 50181 any 1 1 0 false 0 50181 top 1 0 any 1 1 0 true 0 50181 eq 2 0 proper 1 1 1 ok 1 1 1 0 0 50181 s 1 1 0 nil 0 50181 mark 1 1 0 proper 1 0 inf 1 0 active 1 50180 cons 2 1 50181 active 1 0 length 1 1 0 length 1 0 inf 1 1 0 proper 0 ok 0 take X1 mark X2 mark take X1 X2 length mark X mark length X proper false ok false any proper X any any any X proper true ok true length ok X ok length X s ok X ok s X proper nil ok nil cons ok X1 ok X2 ok cons X1 X2 take mark X1 X2 mark take X1 X2 take ok X1 ok X2 ok take X1 X2 inf mark X mark inf X any X s X inf ok X ok inf X inf mark X inf X inf ok X inf X true cons 2 0 s 1 1 0 take 2 0 take 2 1 1 top 1 0 eq 2 2 any 1 1 0 false 0 17574 top 1 0 any 1 1 0 true 0 30754 eq 2 0 proper 1 1 1 ok 1 1 1 0 0 2 s 1 0 nil 0 2 mark 1 1 0 proper 1 0 inf 1 1 0 active 1 1 cons 2 1 2 active 1 0 length 1 1 0 length 1 0 inf 1 1 0 inf mark X inf X proper 0 ok 0 take X1 mark X2 mark take X1 X2 length mark X mark length X proper false ok false any proper X any any any X proper true ok true length ok X ok length X s ok X ok s X proper nil ok nil cons ok X1 ok X2 ok cons X1 X2 take mark X1 X2 mark take X1 X2 take ok X1 ok X2 ok take X1 X2 inf mark X mark inf X any X s X inf ok X ok inf X inf mark X inf X true cons 2 0 s 1 1 0 take 2 0 take 2 1 2 0 top 1 0 eq 2 1 any 1 1 0 false 0 1427 top 1 0 any 1 0 true 0 26064 eq 2 0 proper 1 0 ok 1 0 0 0 25337 s 1 0 nil 0 22611 mark 1 1 7803 proper 1 0 inf 1 1 0 active 1 7802 cons 2 0 active 1 0 length 1 0 length 1 0 inf 1 0 proper 0 ok 0 take X1 mark X2 mark take X1 X2 proper false ok false proper true ok true proper nil ok nil take mark X1 X2 mark take X1 X2 take ok X1 ok X2 ok take X1 X2 active length X length active X false length ok X length X length mark X length X true cons 2 0 s 1 1 0 take 2 0 take 2 1 2 0 top 1 0 eq 2 0 any 1 1 0 false 0 1 top 1 0 any 1 0 true 0 0 eq 2 0 proper 1 0 ok 1 1 0 0 0 0 s 1 0 nil 0 0 mark 1 1 34734 proper 1 0 inf 1 0 active 1 34733 cons 2 0 active 1 0 length 1 0 length 1 1 0 inf 1 0 length ok X length X proper 0 ok 0 take X1 mark X2 mark take X1 X2 proper true ok true proper nil ok nil take mark X1 X2 mark take X1 X2 take ok X1 ok X2 ok take X1 X2 length ok X length X true cons 2 0 s 1 1 0 take 2 0 take 2 2 0 top 1 0 eq 2 2 0 any 1 0 false 0 1 top 1 0 any 1 0 true 0 0 eq 2 0 proper 1 1 ok 1 1 1 0 0 0 s 1 0 nil 0 0 mark 1 1 proper 1 0 inf 1 0 active 1 0 cons 2 0 active 1 0 length 1 0 length 1 1 0 inf 1 1 0 proper 0 ok 0 take X1 mark X2 mark take X1 X2 proper true ok true proper nil ok nil NaTT certifiable-1.6