a-a a-b a-t aaa aab aak aar aas aat aay ab- aba abb abk abr abs abt aby aka akb akk akr aks ar- ara arb ark arr ars art ary as- asa asb ask asr ass ast asy at- ata atb atr ats att ay- aya ayk ayr ays ayt baa bab bak bar bas bat bay bba bbb bbk bbr bbs bbt bby bka bkb bkk bkr bks bkt bra brb brk brr brs brt bry bsa bsb bsk bsr bss bst bsy bta btb btk btr bts btt bty by- bya byk byr bys byt k-t ka- kaa kab kak kar kas kat kay kba kbb kbk kbr kbs kkb kkk kkr kks kkt kky kra krk krr krs krt kry ksa ksb ksk ksr kss kst kta ktb ktk ktr kts ktt kya kyr kys kyt ra- raa rab rak rar ras rat ray rba rbb rbk rbr rbs rbt rkb rkk rks rkt rky rra rrb rrk rrr rrs rrt rsa rsb rsk rsr rss rst rta rtb rtk rtr rts rtt rty ry- rya ryk ryr rys ryy saa sab sak sar sas sat say sba sbb sbk sbr sbs sbt sby sk- ska skb skk skr sks skt sky sr- sra srb srk srr srs srt sry ss- ssa ssb ssk ssr sss sst sta stb stk str sts stt sty sy- sya syb syk syr sys syt taa tab tak tar tas tat tay tba tbb tbk tbr tbs tbt tka tkb tkk tkr tks tkt tky tra trb trk trr trs trt try tsa tsb tsk tsr tss tst tsy tta ttb ttk ttr tts ttt tty tya tyr tys tyt yaa yab yak yar yas yat yay ybr ybs yby yka ykk yra yrs yrt ysa ysb ysk ysr yss yst ysy yta ytk ytr yts ytt yyb yys yyt yyy