c-- ccc ccf ccm cco ccp ccs cct cfc cff cfm cfo cfp cfs cft cmc cmf cmm cmo cmp cms cmt co- coc cof com coo cop cos cot cpc cpf cpm cpo cpp cps cpt csc csf csm cso csp css cst ctc ctf ctm cto ctp cts ctt fcc fcf fcm fco fcp fcs fct ffc fff ffm ffo ffp ffs fft fmc fmf fmm fmo fmp fms fmt foc fof fom foo fop fos fot fpc fpm fpo fpp fps fpt fsc fsf fsm fso fsp fss fst ftc ftf ftm fto ftp fts ftt m-f m-o mc- mcc mcf mcm mco mcp mcs mct mfc mff mfm mfo mfp mfs mft mmc mmf mmm mmo mmp mms mmt moc mof mom moo mop mos mot mpc mpf mpm mpo mpp mps mpt msc msf msm mso msp mss mst mtc mtf mtm mto mtp mts mtt oc- occ ocf ocm oco ocp ocs oct of- ofc off ofm ofo ofp ofs oft om- omc omf omm omo omp oms omt oo- ooc oof oom ooo oop oos oot op- opc opf opm opo opp ops opt os- osc osf osm oso osp oss ost ot- otc otf otm oto otp ots ott p-p pcc pcf pcm pco pcp pcs pct pfc pff pfm pfo pfp pfs pft pmc pmf pmm pmo pmp pms pmt poc pof pom poo pop pos pot ppc ppf ppm ppo ppp pps ppt ps- psc psf psm pso psp pss pst pt- ptc ptf ptm pto ptp pts ptt scc scf scm sco scp scs sct sfc sff sfm sfo sfp sfs sft smc smf smm smo smp sms smt soc sof som soo sop sos sot spc spf spm spo spp sps spt ss- ssc ssf ssm sso ssp sss sst stc stf stm sto stp sts stt tcc tcf tcm tco tcp tcs tct tfc tff tfm tfo tfp tfs tft tmc tmf tmm tmo tmp tms tmt to- toc tof tom too top tos tot tpc tpf tpm tpo tpp tps tpt tsc tsf tsm tso tsp tss tst ttc ttf ttm tto ttp tts ttt