c-- ccc cce ccm cco ccp cct ce- cec cee cem ceo cep cet cmc cme cmm cmo cmp cmt co- coc coe com coo cop cot cpc cpe cpm cpo cpp cpt ctc cte ctm cto ctp ctt ec- ecc ece ecm eco ect eec eee eem eeo eep eet em- emc eme emm emo emp emt eo- eoc eoe eom eoo eop eot ep- epc epe epm epo epp ept etc ete etm eto etp ett m-o mc- mcc mce mcm mco mcp mct mec mee mem meo mep met mmc mme mmm mmo mmp mmt moc moe mom moo mop mot mpc mpe mpm mpo mpp mpt mtc mte mtm mto mtp mtt oc- occ ocm oco ocp oct oec oee oem oeo oep oet om- omc ome omm omo omp omt oo- ooc oom ooo oop oot op- opc ope opm opo opp opt ot- otc ote otm oto otp ott p-p pcc pce pcm pco pcp pct pec pee pem peo pep pet pmc pme pmm pmo pmp pmt poc poe pom poo pop pot ppc ppe ppm ppo ppp ppt pt- ptc pte ptm pto ptp ptt tcc tce tcm tco tcp tct te- tec tee tem teo tep tet tmc tme tmm tmo tmp tmt to- toc toe tom too top tot tpc tpe tpm tpo tpp tpt ttc tte ttm tto ttp ttt