a-a a-t aaa aam aap aas aat ama amm amp ams amt ap- apa apm app aps apt as- asa asm asp ass ast at- ata atm atp ats att maa mam map mas mat mma mmm mmp mms mmt mpa mpm mpp mps mpt msa msm msp mss mst mta mtm mtp mts mtt p-p paa pam pap pas pat pma pmm pmp pms pmt ppa ppm ppp pps ppt ps- psa psm psp pss pst pt- pta ptm ptp pts ptt saa sam sap sas sat sma smm smp sms smt spa spm spp sps spt ss- ssa ssm ssp sss sst sta stm stp sts stt taa tam tap tas tat tma tmm tmp tms tmt tpa tpm tpp tps tpt tsa tsm tsp tss tst tta ttm ttp tts ttt