-th a-a a-t aaa aah aar aas aat aax aha ahh ahr ahs aht ahx ar- ara arh arr ars art arx as- asa ash asr ass ast asx at- ata ath atr ats att atx ax- axa axh axr axs axt axx haa hah har has hat hax hha hhh hhr hhs hht hr- hra hrh hrr hrs hrt hsa hsh hsr hss hst hsx hta hth htr hts htt htx ra- raa rah rar ras rat rax rh- rha rhh rhr rhs rht rra rrh rrr rrs rrt rsa rsh rsr rss rst rsx rta rtr rts rtt rtx rxr rxs saa sah sar sas sat sax sh- sha shh shr shs sht sr- sra srh srr srs srt srx ss- ssa ssh ssr sss sst ssx sta sth str sts stt stx sxs sxt t-x taa tah tar tas tat tax th- tha thh thr ths tht thx tra trh trr trs trt trx tsa tsh tsr tss tst tsx tta tth ttr tts ttt ttx txs txt xaa xar xas xat xht xrt xrx xsa xss xst xtr xts xtx xxx