c-- ccc cce ccf ccn ccp cct ce- cec cee cef cen cep cet cfc cfe cff cfn cfp cft cn- cnc cne cnf cnn cnp cnt cpc cpe cpf cpn cpp cpt ctc cte ctf ctn ctp ctt ec- ecc ece ecf ecn ect eec eee eef een eep eet ef- efc efe eff efp eft en- enc ene enf enn enp ent ep- epc epe epf epn epp ept etc ete etf etn etp ett fcc fce fcf fcn fcp fct fec fee fef fen fep fet ffc ffe fff ffn ffp fft fnc fne fnf fnn fnp fnt fpc fpe fpn fpp fpt ftc fte ftf ftn ftp ftt ncc nce ncf ncn ncp nct ne- nec nee nef nen nep net nfc nfe nff nfn nfp nft nnc nne nnf nnn nnp nnt npc npe npf npn npp npt ntc nte ntf ntn ntp ntt p-p pcc pce pcf pcn pcp pct pec pee pef pen pep pet pfc pfe pff pfn pfp pft pn- pnc pne pnf pnn pnp pnt ppc ppe ppf ppn ppp ppt pt- ptc pte ptf ptn ptp ptt tcc tce tcf tcn tcp tct te- tec tee tef ten tep tet tfc tfe tff tfn tfp tft tnc tne tnf tnn tnp tnt tpc tpe tpf tpn tpp tpt ttc tte ttf ttn ttp ttt