-th a-a a-c a-t aaa aac aah aar aas aat aax aay ac- aca acc ach acr acs act acx acy aha ahc ahh ahr ahs aht ahx ahy ar- ara arc arh arr ars art arx ary as- asa asc ash asr ass ast asx asy at- ata atc ath atr ats att atx ax- axa axh axr axs axt axx ay- aya ayc ayh ayr ays ayt ayx c-- caa cac cah car cas cat cax cay cca ccc cch ccr ccs cct ccx ch- cha chc chh chr chs cht chx chy cra crc crh crr crs crt crx cry csa csc csh csr css cst csx csy cta ctc cth ctr cts ctt ctx cty cxc cxh cxr cxs cxt cxx cya cyc cyr cys cyt haa hac hah har has hat hax hay hca hcc hch hcr hcs hct hcy hha hhc hhh hhr hhs hht hhy hr- hra hrc hrh hrr hrs hrt hsa hsc hsh hsr hss hst hsx hsy hta htc hth htr hts htt htx hty hxc hy- hya hyc hyh hyr hys hyt hyy ra- raa rac rah rar ras rat rax ray rca rcc rch rcr rcs rct rcx rh- rha rhc rhh rhr rhs rht rra rrc rrh rrr rrs rrt rsa rsc rsh rsr rss rst rsx rta rtc rtr rts rtt rtx rty rxr rxs ry- rya ryc ryr rys ryy saa sac sah sar sas sat sax say sca scc sch scr scs sct scx sh- sha shc shh shr shs sht shy sr- sra src srh srr srs srt srx sry ss- ssa ssc ssh ssr sss sst ssx sta stc sth str sts stt stx sty sxc sxs sxt sy- sya syc syh syr sys syt syx t-x taa tac tah tar tas tat tax tay tca tcc tch tcr tcs tct tcx th- tha thc thh thr ths tht thx thy tra trc trh trr trs trt trx try tsa tsc tsh tsr tss tst tsx tsy tta ttc tth ttr tts ttt ttx tty txs txt tya tyc tyr tys tyt xaa xac xar xas xat xch xcr xcx xht xrc xrt xrx xry xsa xsc xss xst xtc xtr xts xtx xty xxx xxy xyr xyy yaa yac yah yar yas yat yax yay yca ycc ych ycs ycy yha yhc yhs yht yra yrc yrs yrt ysa ysc ysr yss yst ysy yta ytc yth ytr yts ytt yxa yxy yyc yys yyt yyy