a-a a-b a-t aaa aab aak aam aao aar aas aat ab- aba abb abk abm abo abr abs abt aka akb akk akm ako akr aks ama amb amk amm amo amr ams amt aoa aob aok aom aoo aor aos aot ar- ara arb ark arm aro arr ars art as- asa asb ask asm aso asr ass ast at- ata atb atm ato atr ats att baa bab bak bam bao bar bas bat bba bbb bbk bbm bbo bbr bbs bbt bka bkb bkk bkm bko bkr bks bkt bma bmb bmk bmm bmo bmr bms bmt boa bob bok bom boo bor bos bot bra brb brk brm bro brr brs brt bsa bsb bsk bsm bso bsr bss bst bta btb btk btm bto btr bts btt k-t ka- kaa kab kak kam kao kar kas kat kba kbb kbk kbm kbo kbr kbs kkb kkk kkm kkr kks kkt kma kmb kmk kmm kmo kms kmt koa kob kok kom koo kor kos kot kra krk kro krr krs krt ksa ksb ksk ksm kso ksr kss kst kta ktb ktk ktm kto ktr kts ktt m-o m-r maa mab mak mam mao mar mas mat mba mbb mbk mbm mbo mbr mbs mbt mka mkb mkk mkm mko mkr mks mkt mma mmb mmk mmm mmo mmr mms mmt moa mob mok mom moo mor mos mot mra mrb mrk mrm mro mrr mrs mrt msa msb msk msm mso msr mss mst mta mtb mtk mtm mto mtr mts mtt oaa oab oak oam oao oar oas oat ob- oba obb obk obm obo obr obs obt oka okb okk oko okr oks om- oma omb omm omo omr oms omt oo- ooa oob ook oom ooo oor oos oot or- ora orb ork orm oro orr ors ort os- osa osb osk osm oso osr oss ost ot- ota otb otk otm oto otr ots ott ra- raa rab rak ram rao rar ras rat rba rbb rbk rbm rbo rbr rbs rbt rkb rkk rkm rko rks rkt rma rmb rmm rmo rmr rms rmt roa rob rok rom roo ror ros rot rra rrb rrk rrm rrr rrs rrt rsa rsb rsk rsm rso rsr rss rst rta rtb rtk rtm rto rtr rts rtt saa sab sak sam sao sar sas sat sba sbb sbk sbm sbo sbr sbs sbt sk- ska skb skk skm sko skr sks skt sma smb smk smm smo smr sms smt soa sob sok som soo sor sos sot sr- sra srb srk srm sro srr srs srt ss- ssa ssb ssk ssm sso ssr sss sst sta stb stk stm sto str sts stt taa tab tak tam tao tar tas tat tba tbb tbk tbm tbo tbr tbs tbt tka tkb tkk tkm tko tkr tks tkt tma tmb tmk tmm tmo tmr tms tmt to- toa tob tok tom too tor tos tot tra trb trk trm tro trr trs trt tsa tsb tsk tsm tso tsr tss tst tta ttb ttk ttm tto ttr tts ttt

a-ak a-ok aaaa aaab aaam aaar aaas aaba aabb aabm aabt aaka aama aamb aamo aamr aams aaoo aara aarm aaro aars aart aasa aasm aass aast aata aatk aatt abaa abab abak abam abar abas abat abb- abba abbb abbo abbr abbs abbt abma abmb abms abmt aboa abob abok aboo abor abos abot abra abro abrs abs- absa abss abta abts akaa akam akao akar akas akka akko akok akom akos akot akr- akra aksa akst amaa amam amar amas amat amb- amba ambo ambr ambs amka amm- amma ammo amob amok amoo amor amos amot amra amro amsa amso amss amst amta amtk amto amts aoba aoks aoma aora aorb aors aort aoss arab arak aram arar aras arat arba arbs arka arko arks arma armm armo arms armt aroa arob arom aroo aror aros arr- arra arrk arro arrr arrs arrt ars- arsa arsk arso arst arta arto artr arts asaa asab asak asam asao asar asas asat asba asbm asbo aska asko askr asks askt asma asmm asmr asms asmt asob asok asom asor asos asot asra asrm asro asrs assa assk asso assr asss asst asta astb astm asto astr asts at-t ataa atab atak atar atas atat atbs atka atkt atm- atma atmo atms atob atok atom ator atos atot atra atrk atrm atro atsb atst atta atto attr atts baaa baak baam baar baas baat baba babb babm babo babr babs bak- baka bako bakr baks bakt bama bamb bamm bams baos bar- bara barb bark barm baro barr bars bart basa bask baso bass bast bata bato bats batt bbas bbbb bbbs bmaa bmts boab boak boar boas boat boba bobb bobo bobs boka boko boks boma bomb boms bomt boob book boom boor boos boot bor- bora bork borm boro borr bors bort bosa bosk bosm boso boss bost bota botb boto bots bott brab brak bram brao bras brat brka brkb broa brob brok brom broo bror bros brot brrm brrr brrs brsb brsr brst bsaa bsam bsas bsat bskt bsms bsmt bsos bsra bsrm bssm bsts btaa btob btor btrt btss bttb k-os kaaa kaab kaak kaam kaar kaas kaat kaba kabb kabo kabr kaka kakk kakm kako kaks kakt kam- kama kamb kamm kamo kamr kams kamt kaoa kaok kaor kaos kara karb kark karm karo karr kars kart kas- kasa kasb kask kasm kaso kasr kass kast kat- kata katb katk katm kato katr kats katt kbaa kbab kbak kbam kbar kbas kbat kbba kbbb kbbk kbbm kbbo kbbr kbbs kbbt kbkb kbkk kbko kbkr kbmb kbmo kbmr kbms kbmt kboa kbob kbok kboo kbos kbot kbra kbrb kbrk kbro kbrt kbsa kbsb kbsk kbsm kbso kbsr kbss kbst kbta kbtb kbtk kbtm kbto kbtr kbts kbtt kkaa kkam kkar kkat kkba kkbb kkbo kkbr kkbs kkbt kkkk kkma kkmk kkmo kkmr kkms kkmt kkoa kkob kkoo