c-- ccc cce ccm ccp ccs cct ce- cec cee cem cep ces cet cmc cme cmm cmp cms cmt cpc cpe cpm cpp cps cpt csc cse csm csp css cst ctc cte ctm ctp cts ctt ec- ecc ece ecm ecs ect eec eee eem eep ees eet em- emc eme emm emp ems emt ep- epc epe epm epp eps ept es- esc ese esm esp ess est etc ete etm etp ets ett mc- mcc mce mcm mcp mcs mct mec mee mem mep mes met mmc mme mmm mmp mms mmt mpc mpe mpm mpp mps mpt msc mse msm msp mss mst mtc mte mtm mtp mts mtt p-p pcc pce pcm pcp pcs pct pec pee pem pep pes pet pmc pme pmm pmp pms pmt ppc ppe ppm ppp pps ppt ps- psc pse psm psp pss pst pt- ptc pte ptm ptp pts ptt scc sce scm scp scs sct se- sec see sem sep ses set smc sme smm smp sms smt spc spe spm spp sps spt ss- ssc sse ssm ssp sss sst stc ste stm stp sts stt tcc tce tcm tcp tcs tct te- tec tee tem tep tes tet tmc tme tmm tmp tms tmt tpc tpe tpm tpp tps tpt tsc tse tsm tsp tss tst ttc tte ttm ttp tts ttt