a-ak a-ok aaaa aaab aaac aaal aaap aaba aabb aabc aabl aabp aaca aacb aacc aack aacl aaco aacp aaka aala aalc aall aalo aaoo aapa aapc aapl aapo abaa abab abac abak abal abap abb- abba abbb abbo abca abcb abcc abcl abcp abla ablo aboa abob abok abol aboo abpa abpc abpp acaa acab acac acap acba acbl acca accc acco accp acla aclc acoa acol acop acpa akaa akal akao akap akca akka akko aklo akok akpo al-p alaa alac alak alal alao alap alb- alba albc albo alca alcc alco alk- alka alkb alko all- alla alll allo aloa aloc alok alol aloo alop alpa alpl alpo aoba aoca aokp aola aopo apac apak apal apao apap apba apca apcb apcc apco apl- apla aplp apo- apoc apoo apop appa appc appl baaa baak baal baba babb babo bac- baca bacc back baco bak- baka bakl bako bala balc balk ball balo baol bapa bapc bapp bbbb bblb bcaa bcap bcbc bcbp bcca bccc bccl bcpl bcpp blaa blab blac blak blkb blob bloc blok bloo blop boab boac boak boal boba bobb bobo boca bock boco boka boko bola bolk boll bolo boob booc book bool boop bopa bopp bpcp c-bo caaa caab caac caal caap caba cabo cac- caca cacc cack caco caka cala calc calk call calo calp caol capa capb capc capo capp cbac cbal cbbc cbca cbcc cbcl cbcp cbka cbkl cbko cblb cblc cbol cbpc cbpp ccaa ccab ccac ccap ccba ccbc ccca cccb cccc cccl cccp ccla cclc ccob ccoc ccpa ccpl ccpp ckac ckbc ckck ckcl ckco ckoa ckob ckoc ckoo ckpc clab clap clob clok cloo clop clpb clpp coak coal coba cobb cobo coca cock coco cocp cok- coka coko col- cola colb colk coll colo colp coob cook cool coop copa copo copp cpaa cpac cpap cpbc cpca cplc cppa k-lo kaaa kaab kaak kaal kaap kaba kabb kabc kabo kacb kacc kacl kaco kacp kaka kakc kakk kako kala kalb kalc kalk kall kalo kalp kaoa kaoc kaok kaol kap- kapa kapc kapl kapo kapp kbaa kbab kbac kbak kbal kbap kbba kbbb kbbc kbbk kbbl kbbo kbca kbcb kbck kbcl kbco kbkb kbkk kbkl kbko kbla kblb kbll kblo kblp kboa kbob kboc kbok kboo kbpa kbpc kbpk kbpo kcaa kcab kcac kcal kcap kcba kcbc kcbk kcbl kcca kccb kccc kcck kccl kckc kckk kckl kcko kcla kclc kclk kcll kcob kcol kcpa kcpc kcpl kcpo kkaa kkac kkal kkap kkba kkbb kkbl kkbo kkcb kkck kkcl kkco kkkk kklb kklc kkll kklo kkoa kkob kkol kkoo kkpc kkpk kkpl klaa klab klac klak klal klap klbb klbc klbl klca klcb klcc klck klcl klka klkc klkk klkl klko klla kllb kllc kllk kllp kloa klob kloc klok klol kloo klop klpc koab koac koak koal koap koba kobb kobc kobk kobo koca kocb kock kocp koka kokb kokc kokk koko kokp kola kolb kolc kolk koll kolo koob kooc kook kool kooo koop kopa kopb kopp kpac kpak kpal kpao kpba kpbb kpbl kpcc kpcl kpkk kpkl kpla kplc kplk kplo kpoa kpob kpoc kpok kpol kpoo kpop kppc kppk kppl kppo kppp laaa laac laak laal laap laba labo laca lacc lack lacl laco lacp laka lala lall lalo lapa lapb lapc lapp lbcc lcac lcbc lcca lccc lcpa lcpc lcpl lkab lkal llao llcc lllc llll lloa lloc lloo loac loap lob- loba lobb lobo loca locc lock loco loka lokk loko lola loll lolo loob looc look lool loop lopa lopp lpac lpla lppl oall obak obal obba obbo obkb obla obok obol ocab ocac ocak ocal ocap ocbc occa occc oclc ocpa ocpp okak okap okka okko okla oklo okok okol okpo olac olba olbo olca olcc olka olla ollo olpc ooaa ooak ooba oola oolo oooo opal opap opca opla opo- oppa oppo paak paal paap paba paca pack paco paka pako pala palk pall palo palp paoc papa papb papp pbac pbcc pboc pbpa pbpk pcaa pcap pcba pcbc pcca pccc pccl pclk pcll pclo pcoa pcpb pcpp plaa plab plac plak plap plcc plkk plob ploc plok ploo plop plpa plpp poak poba pobo poca pock poco poka poko pola polk poll polo pook pool poop pop- popa popc popo popp ppac ppal ppap ppcc pplo ppoa pppa pppo pppp