c-- ccc ccd cce ccm cco ccp cct cdc cdd cde cdm cdo cdp cdt ce- cec ced cee cem ceo cep cet cmc cmd cme cmm cmo cmp cmt co- coc cod coe com coo cop cot cpc cpd cpe cpm cpo cpp cpt ctc ctd cte ctm cto ctp ctt dcc dcd dce dcm dco dcp dct ddc ddd dde ddm ddo ddp ddt de- dec ded dee dem deo dep det dmc dmd dme dmm dmo dmp dmt doc dod doe dom doo dop dot dpc dpd dpe dpm dpo dpp dpt dtc dtd dte dtm dto dtp dtt ec- ecc ecd ece ecm eco ect ed- edc edd ede edm edo edp edt eec eed eee eem eeo eep eet em- emc emd eme emm emo emp emt eo- eoc eod eoe eom eoo eop eot ep- epc epd epe epm epo epp ept etc etd ete etm eto etp ett m-o mc- mcc mcd mce mcm mco mcp mct mdc mdd mde mdm mdo mdp mdt mec med mee mem meo mep met mmc mmd mme mmm mmo mmp mmt moc mod moe mom moo mop mot mpc mpd mpe mpm mpo mpp mpt mtc mtd mte mtm mto mtp mtt oc- occ ocd ocm oco ocp oct odc odd ode odm odo odp odt oec oed oee oem oeo oep oet om- omc omd ome omm omo omp omt oo- ooc ood oom ooo oop oot op- opc opd ope opm opo opp opt ot- otc otd ote otm oto otp ott p-p pcc pcd pce pcm pco pcp pct pdc pdd pde pdm pdo pdp pdt pec ped pee pem peo pep pet pmc pmd pme pmm pmo pmp pmt poc pod poe pom poo pop pot ppc ppd ppe ppm ppo ppp ppt pt- ptc ptd pte ptm pto ptp ptt tcc tcd tce tcm tco tcp tct tdc tdd tde tdm tdo tdp tdt te- tec ted tee tem teo tep tet tmc tmd tme tmm tmo tmp tmt to- toc tod toe tom too top tot tpc tpd tpe tpm tpo tpp tpt ttc ttd tte ttm tto ttp ttt