-ic a-a a-b a-c a-i a-t aaa aab aac aag aai aak aar aas aat aay ab- aba abb abc abg abi abk abr abs abt aby ac- aca acb acc acg aci ack acr acs act acy ag- aga agb agc agg agi agk agr ags agt agy ai- aia aib aic aig aii aik air ais ait aiy aka akb akc akg aki akk akr aks ar- ara arb arc arg ari ark arr ars art ary as- asa asb asc asg asi ask asr ass ast asy at- ata atb atc atg ati atr ats att ay- aya ayc ayi ayk ayr ays ayt baa bab bac bag bai bak bar bas bat bay bba bbb bbc bbg bbi bbk bbr bbs bbt bby bca bcb bcc bcg bci bck bcr bcs bct bcy bga bgb bgc bgg bgi bgk bgr bgs bgt bi- bia bib bic big bii bik bir bis bit biy bka bkb bkc bkg bkk bkr bks bkt bra brb brg bri brk brr brs brt bry bsa bsb bsc bsg bsi bsk bsr bss bst bsy bta btb btc btg bti btk btr bts btt bty by- bya byc byg byi byk byr bys byt c-- caa cab cac cag cai cak car cas cat cay cba cbb cbc cbg cbi cbk cbr cbs cbt cby cca ccb ccc ccg cci cck ccr ccs cct cga cgb cgc cgg cgi cgr cgs cgt cgy ci- cia cib cic cig cii cik cir cis cit cka ckb ckc cki cks ckt cky cra crb crc crg cri crk crr crs crt cry csa csb csc csg csi csk csr css cst csy cta ctb ctc ctg cti ctk ctr cts ctt cty cya cyb cyc cyg cyk cyr cys cyt gaa gab gac gag gai gak gar gas gat gay gba gbc gbg gbi gbk gbr gbs gbt gby gca gcb gcc gcg gci gck gcr gcs gct gga ggb ggc ggg ggi ggr ggs ggt gia gib gic gig gii gik gir gis git giy gka gkb gks gkt gra grb grc grg gri grk grr grs grt gry gsa gsb gsc gsg gsi gsk gsr gss gst gta gtb gtc gtg gti gtk gtr gts gtt gty gy- gya gyb gyr gys ia- iaa iab iac iag iai iar ias iat iba ibb ibc ibg ibi ibk ibr ibs ibt iby ica icb icc icg ici ick icr ics ict icy iga igb igc igg igi igk igr igs igt igy iia iib iic iii iir iis iit ika ikb ikc iki ikk ikr iks ikt ir- ira irb irc irg iri irk irr irs irt iry is- isa isb isc isg isi isk isr iss ist isy ita itb itc itg iti itk its itt ity iya iyc iyr iys iyt iyy k-t ka- kaa kab kac kag kai kak kar kas kat kay kba kbb kbc kbi kbk kbr kbs kca kcb kcc kcg kci kck kcr kcs kct kga kgb kgc kgi kgs kgy kia kib kic kig kii kik kir kis kit kkb kkc kki kkk kkr kks kkt kky kra krc krg kri krk krr krs krt kry ksa ksb ksc ksg ksi ksk ksr kss kst kta ktb ktc ktg ktk ktr kts ktt kya kyc kyr kys kyt ra- raa rab rac rag rai rak rar ras rat ray rba rbb rbc rbg rbi rbk rbr rbs rbt rca rcb rcc rcg rci rcr rcs rct rga rgb rgc rgg rgi rgk rgr rgs rgt ria rib ric rig rii rik rir ris rit riy rkb rkc rkg rkk rks rkt rky rra rrb rrc rrg rri rrk rrr rrs rrt rsa rsb rsc rsg rsi rsk rsr rss rst rta rtb rtc rtg rti rtk rtr rts rtt rty ry- rya ryc ryg ryk ryr rys ryy saa sab sac sag sai sak sar sas sat say sba sbb sbc sbg sbi sbk sbr sbs sbt sby sca scb scc scg sci sck scr scs sct sga sgb sgc sgg sgi sgk sgr sgs sgt sia sib sic sig sii sik sir sis sit sk- ska skb skc skg ski skk skr sks skt sky sr- sra srb src srg sri srk srr srs srt sry ss- ssa ssb ssc ssg ssi ssk ssr sss sst sta stb stc stg sti stk str sts stt sty sy- sya syb syc syg syi syk syr sys syt taa tab tac tag tai tak tar tas tat tay tba tbb tbc tbg tbi tbk tbr tbs tbt tca tcb tcc tcg tci tck tcr tcs tct tga tgb tgc tgg tgi tgk tgr tgs tgt tgy tia tib tic tig tii tik tir tis tit tiy tka tkb tkc tkg tkk tkr tks tkt tky tra trb trc trg tri trk trr trs trt try tsa tsb tsc tsg tsi tsk tsr tss tst tsy tta ttb ttc ttg tti ttk ttr tts ttt tty tya tyc tyg tyr tys tyt yaa yab yac yag yai yak yar yas yat yay ybc ybg ybi ybr ybs yby yca ycc yci ycs ycy yga ygc yig yii yir yis yit yka yki ykk yra yrc yrg yrs yrt ysa ysb ysc ysg ysi ysk ysr yss yst ysy yta ytc ytk ytr yts ytt yyb yyc yyg yys yyt yyy