a-a a-t aaa aak aar aas aat aax aay aka akk akr aks ar- ara ark arr ars art arx ary as- asa ask asr ass ast asx asy at- ata atr ats att atx ax- axa axk axr axs axt axx ay- aya ayk ayr ays ayt ayx k-t ka- kaa kak kar kas kat kax kay kkk kkr kks kkt kky kra krk krr krs krt kry ksa ksk ksr kss kst kta ktk ktr kts ktt kxy kya kyr kys kyt kyx ra- raa rak rar ras rat rax ray rkk rks rkt rky rra rrk rrr rrs rrt rsa rsk rsr rss rst rsx rta rtk rtr rts rtt rtx rty rxr rxs ry- rya ryk ryr rys ryy saa sak sar sas sat sax say sk- ska skk skr sks skt skx sky sr- sra srk srr srs srt srx sry ss- ssa ssk ssr sss sst ssx sta stk str sts stt stx sty sxs sxt sy- sya syk syr sys syt syx t-x taa tak tar tas tat tax tay tka tkk tkr tks tkt tky tra trk trr trs trt trx try tsa tsk tsr tss tst tsx tsy tta ttk ttr tts ttt ttx tty txk txs txt tya tyr tys tyt xaa xak xar xas xat xks xrt xrx xry xsa xss xst xtr xts xtx xty xxx xxy xyr xyy yaa yak yar yas yat yax yay yka ykk yra yrs yrt ysa ysk ysr yss yst ysy yta ytk ytr yts ytt yxa yxy yys yyt yyy