a-a a-t aaa aam aao aar aas aat ama amm amo amr ams amt aoa aom aoo aor aos aot ar- ara arm aro arr ars art as- asa asm aso asr ass ast at- ata atm ato atr ats att m-o m-r maa mam mao mar mas mat mma mmm mmo mmr mms mmt moa mom moo mor mos mot mra mrm mro mrr mrs mrt msa msm mso msr mss mst mta mtm mto mtr mts mtt oaa oam oao oar oas oat om- oma omm omo omr oms omt oo- ooa oom ooo oor oos oot or- ora orm oro orr ors ort os- osa osm oso osr oss ost ot- ota otm oto otr ots ott ra- raa ram rao rar ras rat rma rmm rmo rmr rms rmt roa rom roo ror ros rot rra rrm rrr rrs rrt rsa rsm rso rsr rss rst rta rtm rto rtr rts rtt saa sam sao sar sas sat sma smm smo smr sms smt soa som soo sor sos sot sr- sra srm sro srr srs srt ss- ssa ssm sso ssr sss sst sta stm sto str sts stt taa tam tao tar tas tat tma tmm tmo tmr tms tmt to- toa tom too tor tos tot tra trm tro trr trs trt tsa tsm tso tsr tss tst tta ttm tto ttr tts ttt