-ey c-- ccc cce ccn ccp ccs ce- cec cee cen cep ces cey cn- cnc cne cnn cnp cns cny cpc cpe cpn cpp cps csc cse csn csp css csy cyc cye cyn cyp cys ec- ecc ece ecn ecs eec eee een eep ees eey en- enc ene enn enp ens eny ep- epc epe epn epp eps es- esc ese esn esp ess esy eyc eye eyn eyp eys ncc nce ncn ncp ncs ne- nec nee nen nep nes ney nnc nne nnn nnp nns npc npe npn npp nps nsc nse nsn nsp nss nsy nyc nye nyn nyp nys nyy p-p pcc pce pcn pcp pcs pec pee pen pep pes pey pn- pnc pne pnn pnp pns pny ppc ppe ppn ppp pps ps- psc pse psn psp pss psy py- pyc pye pyn pys scc sce scn scp scs se- sec see sen sep ses sey snc sne snn snp sns sny spc spe spn spp sps spy ss- ssc sse ssn ssp sss sy- syc sye syn syp sys ycc yce ycp ycs ycy yec yee yen yep yes yey yne ynn ynp yns yny yps ysc yse ysp yss ysy yyc yye yys yyy