-er -ey bbb bbc bbe bbf bbn bbo bbr bbs bby bcb bcc bce bcf bcn bco bcr bcs bcy be- beb bec bee bef ben beo ber bes bey bfb bfc bfe bff bfn bfo bfr bfs bfy bnb bnc bne bnf bnn bno bnr bns bob boc boe bof bon boo bor bos boy brb bre brf brn bro brr brs bry bsb bsc bse bsf bsn bso bsr bss bsy by- byc bye byf byn byo byr bys c-- cbb cbc cbe cbf cbn cbo cbr cbs cby ccb ccc cce ccf ccn cco ccr ccs ce- ceb cec cee cef cen ceo cer ces cey cfb cfc cfe cff cfn cfo cfr cfs cn- cnb cnc cne cnf cnn cno cnr cns cny co- cob coc coe cof con coo cor cos coy crb crc cre crf crn cro crr crs cry csb csc cse csf csn cso csr css csy cyb cyc cye cyf cyn cyo cyr cys ebb ebc ebe ebf ebn ebo ebr ebs eby ec- ecb ecc ece ecf ecn eco ecr ecs eeb eec eee eef een eeo eer ees eey ef- efb efc efe eff efo efr efs en- enb enc ene enf enn eno enr ens eny eo- eob eoc eoe eof eon eoo eor eos erb erc ere erf ern ero err ers ery es- esb esc ese esf esn eso esr ess esy eyc eye eyn eyo eyr eys fbb fbc fbe fbf fbn fbo fbr fbs fcb fcc fce fcf fcn fco fcr fcs fcy feb fec fee fef fen feo fer fes fey ffc ffe fff ffn ffo ffr ffs ffy fnb fnc fne fnf fnn fnr fns fob foc foe fof fon foo for fos foy frb frc fre frf frn fro frr frs fry fsb fsc fse fsf fsn fso fsr fss fy- fyb fyc fye fyn fyo nbb nbc nbe nbf nbn nbo nbr nbs ncb ncc nce ncf ncn nco ncr ncs ne- neb nec nee nef nen neo ner nes ney nfb nfc nfe nff nfn nfo nfr nfs nnb nnc nne nnf nnn nno nns no- nob noc noe nof non noo nor nos noy nrb nrc nre nrf nrn nro nrr nrs nry nsb nsc nse nsf nsn nso nsr nss nsy nyc nye nyf nyn nyo nys nyy ob- obb obc obe obf obn obo obr obs oby oc- ocb occ ocf ocn oco ocr ocs oeb oec oee oef oen oeo oer oes oey of- ofb ofc ofe off ofn ofo ofr ofs on- onb onc one onf onn ono onr ons ony oo- oob ooc oof oon ooo oor oos or- orb orc ore orf orn oro orr ors ory os- osb osc ose osf osn oso osr oss oye oyo oys rbb rbc rbe rbf rbn rbo rbr rbs rcb rcc rce rcf rcn rco rcr rcs re- reb rec ree ref ren reo rer res rey rfb rfc rfe rff rfn rfo rfr rfs rnb rnc rnn rno rnr rns rny rob roc roe rof ron roo ror ros roy rrb rrc rrf rrn rrr rrs rsb rsc rse rsf rsn rso rsr rss ry- ryc rye ryf ryn ryo ryr rys ryy sbb sbc sbe sbf sbn sbo sbr sbs sby scb scc sce scf scn sco scr scs se- seb sec see sef sen seo ser ses sey sfb sfc sfe sff sfn sfo sfr sfs snb snc sne snf snn sno snr sns sny sob soc soe sof son soo sor sos soy sr- srb src sre srf srn sro srr srs sry ss- ssb ssc sse ssf ssn sso ssr sss sy- syb syc sye syn syr sys ybc ybe ybf ybr ybs yby ycc yce ycf yco ycs ycy yeb yec yee yef yen yeo yer yes yey yfc yfe yff yfr yfs yne ynn yns yny yob yoc yoe yof yon yoo yor yos yoy yrc yre yrf yrn yro yrs ysb ysc yse yso ysr yss ysy yyb yyc yye yyf yys yyy