a-a a-c a-t aaa aac aam aan aas aat ac- aca acc acm acn acs act ama amc amm amn ams amt an- ana anc anm ann ans ant as- asa asc asm asn ass ast at- ata atc atm atn ats att c-- caa cac cam can cas cat cca ccc ccm ccn ccs cct cma cmc cmm cmn cms cmt cn- cna cnc cnm cnn cns cnt csa csc csm csn css cst cta ctc ctm ctn cts ctt maa mac mam man mas mat mc- mca mcc mcm mcn mcs mct mma mmc mmm mmn mms mmt mna mnc mnm mnn mns mnt msa msc msm msn mss mst mta mtc mtm mtn mts mtt naa nac nam nan nas nat nca ncc ncm ncn ncs nct nma nmc nmm nmn nms nmt nna nnc nnm nnn nns nnt nsa nsc nsm nsn nss nst nta ntc ntm ntn nts ntt saa sac sam san sas sat sca scc scm scn scs sct sma smc smm smn sms smt sna snc snm snn sns snt ss- ssa ssc ssm ssn sss sst sta stc stm stn sts stt taa tac tam tan tas tat tca tcc tcm tcn tcs tct tma tmc tmm tmn tms tmt tna tnc tnm tnn tns tnt tsa tsc tsm tsn tss tst tta ttc ttm ttn tts ttt