K-1) a) A b) D,E,F,H c) 1 d) 2 e) 1 f) 3 K-2) a) D B E A F C H G b) D E B F H G C A c) A B D E C F G H K-3) a) D B A E C F b) D B E F C A c) A B D C E F K-4) a) A B C D E F b) A C D B F E c) E B A D C F K-5) a) D B A E F C b) D B F E C A c) A B D C E F K-6) a) C / \ A D \ B b) B A D C L-1) a) (4 1 2 3) b) (2 3) c) 4 d) (3) e) 1 L-2) a) (A B) b) (A (B)) c) (A . (B . (C. NIL))) d) ((A. (B.NIL)).(C.NIL)) L-3) a) ______ ______ _____ | | | | | | | | ->| | |-->| | | |NIL| ------ ------ ----- | | v v ---- ---- | A| | B| ---- ---- b) ______ ______ _____ | | | | | | | | ->| | |-->| | |-->|NIL| ------ ------ ----- | | v v ____ ______ _____ | | | | | | | | A| | | |-->|NIL| ---- ------ ----- | v ____ | | | B| ---- c) ______ ______ ______ _____ | | | | | | | | | | | ->| | |-->| | |-->| | |-->|NIL| ------ ------ ------ ----- | | | v v v ____ ____ ____ | | | | | | | A| | B| | C| ---- ---- ---- d) ______ ______ _____ | | | | | | | | ->| | |-->| | |-->|NIL| ------ ------ ----- | | | v | ____ | | | | | C| v ---- ______ ______ _____ | | | | | | | | | | |-->| | |-->|NIL| ------ ------ ----- | | v v ____ ____ | | | | | A| | B| ---- ----