m-o m-r mmm mmo mmp mmr mms mmt mom moo mop mor mos mot mpm mpo mpp mpr mps mpt mrm mro mrp mrr mrs mrt msm mso msp msr mss mst mtm mto mtp mtr mts mtt om- omm omo omp omr oms omt oo- oom ooo oop oor oos oot op- opm opo opp opr ops opt or- orm oro orp orr ors ort os- osm oso osp osr oss ost ot- otm oto otp otr ots ott p-p pmm pmo pmp pmr pms pmt pom poo pop por pos pot ppm ppo ppp ppr pps ppt prm pro prp prr prs prt ps- psm pso psp psr pss pst pt- ptm pto ptp ptr pts ptt rmm rmo rmp rmr rms rmt rom roo rop ror ros rot rpm rpo rpp rpr rps rpt rrm rrp rrr rrs rrt rsm rso rsp rsr rss rst rtm rto rtp rtr rts rtt smm smo smp smr sms smt som soo sop sor sos sot spm spo spp spr sps spt sr- srm sro srp srr srs srt ss- ssm sso ssp ssr sss sst stm sto stp str sts stt tmm tmo tmp tmr tms tmt to- tom too top tor tos tot tpm tpo tpp tpr tps tpt trm tro trp trr trs trt tsm tso tsp tsr tss tst ttm tto ttp ttr tts ttt