c-- ccc ccm cco ccp ccs cct cmc cmm cmo cmp cms cmt co- coc com coo cop cos cot cpc cpm cpo cpp cps cpt csc csm cso csp css cst ctc ctm cto ctp cts ctt m-o mc- mcc mcm mco mcp mcs mct mmc mmm mmo mmp mms mmt moc mom moo mop mos mot mpc mpm mpo mpp mps mpt msc msm mso msp mss mst mtc mtm mto mtp mts mtt oc- occ ocm oco ocp ocs oct om- omc omm omo omp oms omt oo- ooc oom ooo oop oos oot op- opc opm opo opp ops opt os- osc osm oso osp oss ost ot- otc otm oto otp ots ott p-p pcc pcm pco pcp pcs pct pmc pmm pmo pmp pms pmt poc pom poo pop pos pot ppc ppm ppo ppp pps ppt ps- psc psm pso psp pss pst pt- ptc ptm pto ptp pts ptt scc scm sco scp scs sct smc smm smo smp sms smt soc som soo sop sos sot spc spm spo spp sps spt ss- ssc ssm sso ssp sss sst stc stm sto stp sts stt tcc tcm tco tcp tcs tct tmc tmm tmo tmp tms tmt to- toc tom too top tos tot tpc tpm tpo tpp tps tpt tsc tsm tso tsp tss tst ttc ttm tto ttp tts ttt