m-o mmm mmo mmp mms mmt mom moo mop mos mot mpm mpo mpp mps mpt msm mso msp mss mst mtm mto mtp mts mtt om- omm omo omp oms omt oo- oom ooo oop oos oot op- opm opo opp ops opt os- osm oso osp oss ost ot- otm oto otp ots ott p-p pmm pmo pmp pms pmt pom poo pop pos pot ppm ppo ppp pps ppt ps- psm pso psp pss pst pt- ptm pto ptp pts ptt smm smo smp sms smt som soo sop sos sot spm spo spp sps spt ss- ssm sso ssp sss sst stm sto stp sts stt tmm tmo tmp tms tmt to- tom too top tos tot tpm tpo tpp tps tpt tsm tso tsp tss tst ttm tto ttp tts ttt