c-- ccc ccm cco ccp cct cmc cmm cmo cmp cmt co- coc com coo cop cot cpc cpm cpo cpp cpt ctc ctm cto ctp ctt m-o mc- mcc mcm mco mcp mct mmc mmm mmo mmp mmt moc mom moo mop mot mpc mpm mpo mpp mpt mtc mtm mto mtp mtt oc- occ ocm oco ocp oct om- omc omm omo omp omt oo- ooc oom ooo oop oot op- opc opm opo opp opt ot- otc otm oto otp ott p-p pcc pcm pco pcp pct pmc pmm pmo pmp pmt poc pom poo pop pot ppc ppm ppo ppp ppt pt- ptc ptm pto ptp ptt tcc tcm tco tcp tct tmc tmm tmo tmp tmt to- toc tom too top tot tpc tpm tpo tpp tpt ttc ttm tto ttp ttt