a-a a-t aaa aam aar aas aat aax ama amm amr ams amt amx ar- ara arm arr ars art arx as- asa asm asr ass ast asx at- ata atm atr ats att atx ax- axa axm axr axs axt axx m-r maa mam mar mas mat max mma mmm mmr mms mmt mmx mra mrm mrr mrs mrt mrx msa msm msr mss mst msx mta mtm mtr mts mtt mtx mxa mxr mxs ra- raa ram rar ras rat rax rma rmm rmr rms rmt rmx rra rrm rrr rrs rrt rsa rsm rsr rss rst rsx rta rtm rtr rts rtt rtx rxr rxs saa sam sar sas sat sax sma smm smr sms smt smx sr- sra srm srr srs srt srx ss- ssa ssm ssr sss sst ssx sta stm str sts stt stx sxm sxs sxt t-x taa tam tar tas tat tax tma tmm tmr tms tmt tmx tra trm trr trs trt trx tsa tsm tsr tss tst tsx tta ttm ttr tts ttt ttx txs txt xaa xam xar xas xat xma xmm xmr xms xmt xmx xrt xrx xsa xsm xss xst xtm xtr xts xtx xxx