terms N cons recip sqr N terms s N sqr 0 0 sqr s X s add sqr X dbl X dbl 0 0 dbl s X s s dbl X add 0 X X add s X Y s add X Y first 0 X nil first s X cons Y Z cons Y first X Z terms 1 1 cons 2 1 recip 1 1 sqr 1 1 s 1 0 0 add 2 1 2 dbl 1 1 first 2 1 2 nil 0 FULL ./TRS/CSR/Ex26_Luc03b.trs