-al a-a a-b aaa aab aad aak aal aar aas ab- aba abb abd abk abl abr abs ad- ada adb add adk adl adr ads aka akb akd akk akl akr aks al- ala alb ald alk all alr als ar- ara arb ard ark arl arr ars as- asa asb asd ask asl asr ass baa bab bad bak bal bar bas bba bbb bbd bbk bbl bbr bbs bda bdb bdd bdk bdl bdr bds bka bkb bkk bkl bkr bks bla blb bld blk bll blr bls bra brb brd brk brl brr brs bsa bsb bsd bsk bsl bsr bss daa dab dad dak dal dar das dba dbb dbd dbk dbl dbr dbs dda ddb ddd ddk ddl ddr dds dka dkb dkk dkl dkr dks dl- dla dlb dld dlk dll dlr dls dra drb drd drk drl drr drs dsa dsb dsd dsk dsl dsr dss ka- kaa kab kad kak kal kar kas kba kbb kbd kbk kbl kbr kbs kda kdb kdk kdl kdr kds kkb kkk kkl kkr kks kl- kla klb kld klr kls kra krd krk krl krr krs ksa ksb ksd ksk ksl ksr kss la- laa lab lad lak lal lar las lba lbb lbd lbk lbl lbr lbs lda ldb ldd ldk ldl ldr lds lka lkb lkl lkr lks lla llb lld llk lll llr lls lra lrb lrd lrk lrr lrs lsa lsb lsd lsk lsl lsr lss ra- raa rab rad rak ral rar ras rba rbb rbd rbk rbl rbr rbs rda rdb rdd rdl rdr rds rkb rkk rks rla rld rll rlr rls rra rrb rrd rrk rrl rrr rrs rsa rsb rsd rsk rsl rsr rss saa sab sad sak sal sar sas sba sbb sbd sbk sbl sbr sbs sda sdb sdd sdk sdl sdr sds sk- ska skb skd skk skl skr sks sla slb sld slk sll slr sls sr- sra srb srd srk srl srr srs ss- ssa ssb ssd ssk ssl ssr sss

a-ak aaaa aaab aaad aaal aaar aaas aaba aabb aabd aabl aada aads aaka aala aald aall aals aara aard aars aasa aasd aass abaa abab abad abak abal abar abas abb- abba abbb abbr abbs abda abla abls abra abrs abs- absa absd absl abss adaa adab adad adak adal adar adas adba adda addd addl addr adds adls adra adrs adsa adsl adsr adss akaa akal akar akas akka akr- akra aksa alaa alad alak alal alar alas alb- alba albs ald- alda aldl alds alk- alka alkb alkd all- alla alll allr alls alsa arab arad arak aral arar aras arba arbs arda ardl ards arka arks arla arr- arra arrk arrr arrs ars- arsa arsd arsk asaa asab asad asak asal asar asas asba asda asdl asds aska askr asks asla aslr asra asrs assa assd assk assl assr asss baaa baad baak baal baar baas baba babb babr babs bada badb badd badr bads bak- baka bakl bakr baks bala bald balk ball bals bar- bara barb bard bark barr bars basa bask bass bbad bbas bbbb bbbs bbdd bblb bbls bd-r bdls bdsd blaa blab blad blak blas bldr blkb blkd blls blss brab brad brak bras brda brds brka brkb brls brrr brrs brsb brsr bsaa bsas bsbd bsdl bsra bsrd bssd daab daad daal daar daas daba dabb dabs dada dads daka daks dala dalk dall dals dara darb dard dark darl darr dars dasa dasb dasd dask dasl dass dbar dbas dbls dbrs dbsa dbss dddd ddss dkba dlab dlbd dlrs draa drab drad drak drar dras drba drda drra drrs drsa dsba dsda dsdr dsls dsrr dssa kaaa kaab kaak kaal kaar kaas kaba kabb kabd kabr kad- kada kadd kadl kadr kads kaka kakk kaks kala kalb kald kalk kall kals kara karb kard kark karl karr kars kas- kasa kasb kask kasl kasr kass kbaa kbab kbad kbak kbal kbar kbas kbba kbbb kbbd kbbk kbbl kbbr kbbs kbdb kbdl kbdr kbds kbkb kbkk kbkl kbkr kbla kblb kbld kbll kblr kbls kbra kbrb kbrd kbrk kbrl kbsa kbsb kbsk kbsr kbss kdaa kdab kdad kdak kdal kdar kdbb kdbl kdbr kdbs kddb kddd kddk kddl kddr kdka kdkb kdkd kdkk kdkr kdla kdlb kdld kdll kdlr kdls kdrb kdrl kdrs kdsd kdsk kdsl kdsr kdss kkaa kkal kkar kkba kkbb kkbd kkbl kkbr kkbs kkda kkdd kkdl kkkk kklb kkld kkll kkls kkrb kkrk kkrl kkrr kkrs kksa kksd kksr kkss klaa klab klad klak klal klar klas klbb klbd klbl klbs kldd kldr klds klka klkk klkl klkr klks klla kllb kllk klls klrd klrk klrr klrs klsa klsd klsr krab krad krak kral krar kras krba krbb krbd krbk krbl krbr krda krdd krdr krds krka krkd krkk krkr krks krla krld krrb krrk krrl krrr krrs krsa krsd krsk krsl krsr krss ksab ksak ksal ksar ksas ksba ksbl ksbr ksbs ksdk ksdl ksdr ksds kska kskb kskd kskk kskr ksks ksla kslb ksld kslk ksll kslr ksra ksrb ksrr ksrs kssa kssl kssr ksss laaa laad laak laal laar laas laba labr labs lada ladd lads laka laks lala lald lall lara larb lard lark larr lars lasa lasd lask lass lbar lbds lblr lbrs ldls ldrs lkab lkal lkrs llbs lldb llds llks llll lral lrba lrdd lrds lrrr ls-r lsds lsla lssa lssr raab raad raak raas raba rabb rabk rabl rabs rada radd radl radr rads raka rakk rala ralb rall rara rarb rark rars rasa rasd rask rasl rass rbbb rbbr rbbs rbds rbsd rbsl rbss rdas rkss rlab rlds rlls rrad rras rrrr rsaa rsdd rsdl rsds rssa rssl saab saad saak saal saar saas saba sabb sabr sabs sada sadb sadd sadl sadr sads saka sakb sakk saks sala sald salk sall sals sara sard sark sarl sarr sars sasa sasd sask sasl sass sbaa sbar sbas sbbs sbds sbrk sbsa sbsd sdak sdba sdds sdla