-er -ey c-- ccc cce ccn cco ccr ccs ce- cec cee cen ceo cer ces cey cn- cnc cne cnn cno cnr cns cny co- coc coe con coo cor cos coy crc cre crn cro crr crs cry csc cse csn cso csr css csy cyc cye cyn cyo cyr cys ec- ecc ece ecn eco ecr ecs eec eee een eeo eer ees eey en- enc ene enn eno enr ens eny eo- eoc eoe eon eoo eor eos erc ere ern ero err ers ery es- esc ese esn eso esr ess esy eyc eye eyn eyo eyr eys ncc nce ncn nco ncr ncs ne- nec nee nen neo ner nes ney nnc nne nnn nno nns no- noc noe non noo nor nos noy nrc nre nrn nro nrr nrs nry nsc nse nsn nso nsr nss nsy nyc nye nyn nyo nys nyy oc- occ ocn oco ocr ocs oec oee oen oeo oer oes oey on- onc one onn ono onr ons ony oo- ooc oon ooo oor oos or- orc ore orn oro orr ors ory os- osc ose osn oso osr oss oye oyo oys rcc rce rcn rco rcr rcs re- rec ree ren reo rer res rey rnc rnn rno rnr rns rny roc roe ron roo ror ros roy rrc rrn rrr rrs rsc rse rsn rso rsr rss ry- ryc rye ryn ryo ryr rys ryy scc sce scn sco scr scs se- sec see sen seo ser ses sey snc sne snn sno snr sns sny soc soe son soo sor sos soy sr- src sre srn sro srr srs sry ss- ssc sse ssn sso ssr sss sy- syc sye syn syr sys ycc yce yco ycs ycy yec yee yen yeo yer yes yey yne ynn yns yny yoc yoe yon yoo yor yos yoy yrc yre yrn yro yrs ysc yse yso ysr yss ysy yyc yye yys yyy