a-a a-b a-i a-t aaa aab aai aak aar aas aat aay ab- aba abb abi abk abr abs abt aby ai- aia aib aii aik air ais ait aiy aka akb aki akk akr aks ar- ara arb ari ark arr ars art ary as- asa asb asi ask asr ass ast asy at- ata atb ati atr ats att ay- aya ayi ayk ayr ays ayt baa bab bai bak bar bas bat bay bba bbb bbi bbk bbr bbs bbt bby bi- bia bib bii bik bir bis bit biy bka bkb bkk bkr bks bkt bra brb bri brk brr brs brt bry bsa bsb bsi bsk bsr bss bst bsy bta btb bti btk btr bts btt bty by- bya byi byk byr bys byt ia- iaa iab iai iar ias iat iba ibb ibi ibk ibr ibs ibt iby iia iib iii iir iis iit ika ikb iki ikk ikr iks ikt ir- ira irb iri irk irr irs irt iry is- isa isb isi isk isr iss ist isy ita itb iti itk its itt ity iya iyr iys iyt iyy k-t ka- kaa kab kai kak kar kas kat kay kba kbb kbi kbk kbr kbs kia kib kii kik kir kis kit kkb kki kkk kkr kks kkt kky kra kri krk krr krs krt kry ksa ksb ksi ksk ksr kss kst kta ktb ktk ktr kts ktt kya kyr kys kyt ra- raa rab rai rak rar ras rat ray rba rbb rbi rbk rbr rbs rbt ria rib rii rik rir ris rit riy rkb rkk rks rkt rky rra rrb rri rrk rrr rrs rrt rsa rsb rsi rsk rsr rss rst rta rtb rti rtk rtr rts rtt rty ry- rya ryk ryr rys ryy saa sab sai sak sar sas sat say sba sbb sbi sbk sbr sbs sbt sby sia sib sii sik sir sis sit sk- ska skb ski skk skr sks skt sky sr- sra srb sri srk srr srs srt sry ss- ssa ssb ssi ssk ssr sss sst sta stb sti stk str sts stt sty sy- sya syb syi syk syr sys syt taa tab tai tak tar tas tat tay tba tbb tbi tbk tbr tbs tbt tia tib tii tik tir tis tit tiy tka tkb tkk tkr tks tkt tky tra trb tri trk trr trs trt try tsa tsb tsi tsk tsr tss tst tsy tta ttb tti ttk ttr tts ttt tty tya tyr tys tyt yaa yab yai yak yar yas yat yay ybi ybr ybs yby yii yir yis yit yka yki ykk yra yrs yrt ysa ysb ysi ysk ysr yss yst ysy yta ytk ytr yts ytt yyb yys yyt yyy