a-a a-t aaa aam aao aap aas aat ama amm amo amp ams amt aoa aom aoo aop aos aot ap- apa apm apo app aps apt as- asa asm aso asp ass ast at- ata atm ato atp ats att m-o maa mam mao map mas mat mma mmm mmo mmp mms mmt moa mom moo mop mos mot mpa mpm mpo mpp mps mpt msa msm mso msp mss mst mta mtm mto mtp mts mtt oaa oam oao oap oas oat om- oma omm omo omp oms omt oo- ooa oom ooo oop oos oot op- opa opm opo opp ops opt os- osa osm oso osp oss ost ot- ota otm oto otp ots ott p-p paa pam pao pap pas pat pma pmm pmo pmp pms pmt poa pom poo pop pos pot ppa ppm ppo ppp pps ppt ps- psa psm pso psp pss pst pt- pta ptm pto ptp pts ptt saa sam sao sap sas sat sma smm smo smp sms smt soa som soo sop sos sot spa spm spo spp sps spt ss- ssa ssm sso ssp sss sst sta stm sto stp sts stt taa tam tao tap tas tat tma tmm tmo tmp tms tmt to- toa tom too top tos tot tpa tpm tpo tpp tps tpt tsa tsm tso tsp tss tst tta ttm tto ttp tts ttt