a-a a-c a-t aaa aac aam aar aas aat ac- aca acc acm acr acs act ama amc amm amr ams amt ar- ara arc arm arr ars art as- asa asc asm asr ass ast at- ata atc atm atr ats att c-- caa cac cam car cas cat cca ccc ccm ccr ccs cct cma cmc cmm cmr cms cmt cra crc crm crr crs crt csa csc csm csr css cst cta ctc ctm ctr cts ctt m-r maa mac mam mar mas mat mc- mca mcc mcm mcr mcs mct mma mmc mmm mmr mms mmt mra mrc mrm mrr mrs mrt msa msc msm msr mss mst mta mtc mtm mtr mts mtt ra- raa rac ram rar ras rat rca rcc rcm rcr rcs rct rma rmc rmm rmr rms rmt rra rrc rrm rrr rrs rrt rsa rsc rsm rsr rss rst rta rtc rtm rtr rts rtt saa sac sam sar sas sat sca scc scm scr scs sct sma smc smm smr sms smt sr- sra src srm srr srs srt ss- ssa ssc ssm ssr sss sst sta stc stm str sts stt taa tac tam tar tas tat tca tcc tcm tcr tcs tct tma tmc tmm tmr tms tmt tra trc trm trr trs trt tsa tsc tsm tsr tss tst tta ttc ttm ttr tts ttt