a-a a-c a-t aaa aac aam aan aar aat ac- aca acc acm acn acr act ama amc amm amn amr amt an- ana anc anm ann anr ant ar- ara arc arm arn arr art at- ata atc atm atn atr att c-- caa cac cam can car cat cca ccc ccm ccn ccr cct cma cmc cmm cmn cmr cmt cn- cna cnc cnm cnn cnr cnt cra crc crm crn crr crt cta ctc ctm ctn ctr ctt m-r maa mac mam man mar mat mc- mca mcc mcm mcn mcr mct mma mmc mmm mmn mmr mmt mna mnc mnm mnn mnr mnt mra mrc mrm mrn mrr mrt mta mtc mtm mtn mtr mtt naa nac nam nan nar nat nca ncc ncm ncn ncr nct nma nmc nmm nmn nmr nmt nna nnc nnm nnn nnt nra nrc nrm nrn nrr nrt nta ntc ntm ntn ntr ntt ra- raa rac ram ran rar rat rca rcc rcm rcn rcr rct rma rmc rmm rmn rmr rmt rna rnc rnm rnn rnr rnt rra rrc rrm rrn rrr rrt rta rtc rtm rtn rtr rtt taa tac tam tan tar tat tca tcc tcm tcn tcr tct tma tmc tmm tmn tmr tmt tna tnc tnm tnn tnr tnt tra trc trm trn trr trt tta ttc ttm ttn ttr ttt