a-a a-c a-t aaa aac aam aao aap aas aat ac- aca acc acm aco acp acs act ama amc amm amo amp ams amt aoa aoc aom aoo aop aos aot ap- apa apc apm apo app aps apt as- asa asc asm aso asp ass ast at- ata atc atm ato atp ats att c-- caa cac cam cao cap cas cat cca ccc ccm cco ccp ccs cct cma cmc cmm cmo cmp cms cmt co- coa coc com coo cop cos cot cpa cpc cpm cpo cpp cps cpt csa csc csm cso csp css cst cta ctc ctm cto ctp cts ctt m-o maa mac mam mao map mas mat mc- mca mcc mcm mco mcp mcs mct mma mmc mmm mmo mmp mms mmt moa moc mom moo mop mos mot mpa mpc mpm mpo mpp mps mpt msa msc msm mso msp mss mst mta mtc mtm mto mtp mts mtt oaa oac oam oao oap oas oat oc- oca occ ocm oco ocp ocs oct om- oma omc omm omo omp oms omt oo- ooa ooc oom ooo oop oos oot op- opa opc opm opo opp ops opt os- osa osc osm oso osp oss ost ot- ota otc otm oto otp ots ott p-p paa pac pam pao pap pas pat pca pcc pcm pco pcp pcs pct pma pmc pmm pmo pmp pms pmt poa poc pom poo pop pos pot ppa ppc ppm ppo ppp pps ppt ps- psa psc psm pso psp pss pst pt- pta ptc ptm pto ptp pts ptt saa sac sam sao sap sas sat sca scc scm sco scp scs sct sma smc smm smo smp sms smt soa soc som soo sop sos sot spa spc spm spo spp sps spt ss- ssa ssc ssm sso ssp sss sst sta stc stm sto stp sts stt taa tac tam tao tap tas tat tca tcc tcm tco tcp tcs tct tma tmc tmm tmo tmp tms tmt to- toa toc tom too top tos tot tpa tpc tpm tpo tpp tps tpt tsa tsc tsm tso tsp tss tst tta ttc ttm tto ttp tts ttt