-er -ey c-- ccc cce ccf ccn cco ccr ccs ce- cec cee cef cen ceo cer ces cey cfc cfe cff cfn cfo cfr cfs cn- cnc cne cnf cnn cno cnr cns cny co- coc coe cof con coo cor cos coy crc cre crf crn cro crr crs cry csc cse csf csn cso csr css csy cyc cye cyf cyn cyo cyr cys ec- ecc ece ecf ecn eco ecr ecs eec eee eef een eeo eer ees eey ef- efc efe eff efo efr efs en- enc ene enf enn eno enr ens eny eo- eoc eoe eof eon eoo eor eos erc ere erf ern ero err ers ery es- esc ese esf esn eso esr ess esy eyc eye eyn eyo eyr eys fcc fce fcf fcn fco fcr fcs fcy fec fee fef fen feo fer fes fey ffc ffe fff ffn ffo ffr ffs ffy fnc fne fnf fnn fnr fns foc foe fof fon foo for fos foy frc fre frf frn fro frr frs fry fsc fse fsf fsn fso fsr fss fy- fyc fye fyn fyo ncc nce ncf ncn nco ncr ncs ne- nec nee nef nen neo ner nes ney nfc nfe nff nfn nfo nfr nfs nnc nne nnf nnn nno nns no- noc noe nof non noo nor nos noy nrc nre nrf nrn nro nrr nrs nry nsc nse nsf nsn nso nsr nss nsy nyc nye nyf nyn nyo nys nyy oc- occ ocf ocn oco ocr ocs oec oee oef oen oeo oer oes oey of- ofc ofe off ofn ofo ofr ofs on- onc one onf onn ono onr ons ony oo- ooc oof oon ooo oor oos or- orc ore orf orn oro orr ors ory os- osc ose osf osn oso osr oss oye oyo oys rcc rce rcf rcn rco rcr rcs re- rec ree ref ren reo rer res rey rfc rfe rff rfn rfo rfr rfs rnc rnn rno rnr rns rny roc roe rof ron roo ror ros roy rrc rrf rrn rrr rrs rsc rse rsf rsn rso rsr rss ry- ryc rye ryf ryn ryo ryr rys ryy scc sce scf scn sco scr scs se- sec see sef sen seo ser ses sey sfc sfe sff sfn sfo sfr sfs snc sne snf snn sno snr sns sny soc soe sof son soo sor sos soy sr- src sre srf srn sro srr srs sry ss- ssc sse ssf ssn sso ssr sss sy- syc sye syn syr sys ycc yce ycf yco ycs ycy yec yee yef yen yeo yer yes yey yfc yfe yff yfr yfs yne ynn yns yny yoc yoe yof yon yoo yor yos yoy yrc yre yrf yrn yro yrs ysc yse yso ysr yss ysy yyc yye yyf yys yyy