a-ya aaaa aaab aaac aaal aaap aaba aabb aabc aabl aabp aaby aaca aacb aacc aacl aacp aacy aala aalc aall aapa aapc aapl abaa abab abac abal abap abay abb- abba abbb abby abca abcb abcc abcl abcp abla ably abpa abpc abpp abyc abyy acaa acab acac acap acba acbl acca accc accp accy acla aclc acpa acyl al-p alaa alac alal alap alay alb- alba albc alby alca alcc all- alla alll ally alpa alpl alpy alya apac apal apap apay apba apca apcb apcc apl- apla aplp appa appc appl appy ayal ayay ayca ayla ayya baaa baal baba babb baby bac- baca bacc bala balc ball baly bapa bapc bapp baya bayl bbay bbbb bblb bcaa bcap bcbc bcbp bcca bccc bccl bcpl bcpp blaa blab blac blay bly- bpay bpcp byla caaa caab caac caal caap caba caby cac- caca cacc cala calc call calp capa capb capc capp capy cbac cbal cbbc cbca cbcc cbcl cbcp cblb cblc cbpc cbpp ccaa ccab ccac ccap ccba ccbc ccca cccb cccc cccl cccp ccla cclc ccpa ccpl ccpp clab clap clay clpb clpp cly- cpaa cpac cpap cpbc cpca cplc cppa cya- cyaa cyba cybb cybc cyc- cyca cycb cycc cycl cyl- cylc cyll cypa cypc cyy- cyyc laaa laac laal laap laba laby laca lacc lacl lacp lacy lala lall lapa lapb lapc lapp lapy laya lbcc lcac lcbc lcca lccc lcpa lcpc lcpl llay llcc lllc llll lpac lpla lppl lyc- lyla lyly paal paap paba paca pacy pala pall palp paly papa papb papp papy pay- paya payb payl payp pbac pbcc pbpa pcaa pcap pcba pcbc pcca pccc pccl pcll pcpb pcpp plaa plab plac plap play plcc plpa plpp ppac ppal ppap ppcc pppa pppp pyal pyay pyl- pyla pyll pypy yaba yacc yacp yacy yala yall yalp yapa yapp yaya ycab yccc ylay ylla ypcc yyyy