-er -ey bbb bbc bbe bbn bbo bbr bbs bbt bby bcb bcc bce bcn bco bcr bcs bct bcy be- beb bec bee ben beo ber bes bet bey bnb bnc bne bnn bno bnr bns bnt bob boc boe bon boo bor bos bot boy brb bre brn bro brr brs brt bry bsb bsc bse bsn bso bsr bss bst bsy btb btc bte btn bto btr bts btt bty by- byc bye byn byo byr bys byt c-- cbb cbc cbe cbn cbo cbr cbs cbt cby ccb ccc cce ccn cco ccr ccs cct ce- ceb cec cee cen ceo cer ces cet cey cn- cnb cnc cne cnn cno cnr cns cnt cny co- cob coc coe con coo cor cos cot coy crb crc cre crn cro crr crs crt cry csb csc cse csn cso csr css cst csy ctb ctc cte ctn cto ctr cts ctt cty cyb cyc cye cyn cyo cyr cys cyt ebb ebc ebe ebn ebo ebr ebs ebt eby ec- ecb ecc ece ecn eco ecr ecs ect eeb eec eee een eeo eer ees eet eey en- enb enc ene enn eno enr ens ent eny eo- eob eoc eoe eon eoo eor eos eot erb erc ere ern ero err ers ert ery es- esb esc ese esn eso esr ess est esy etb etc ete etn eto etr ets ett ety eyc eye eyn eyo eyr eys eyt nbb nbc nbe nbn nbo nbr nbs nbt ncb ncc nce ncn nco ncr ncs nct ne- neb nec nee nen neo ner nes net ney nnb nnc nne nnn nno nns nnt no- nob noc noe non noo nor nos not noy nrb nrc nre nrn nro nrr nrs nrt nry nsb nsc nse nsn nso nsr nss nst nsy ntb ntc nte ntn nto ntr nts ntt nyc nye nyn nyo nys nyt nyy ob- obb obc obe obn obo obr obs obt oby oc- ocb occ ocn oco ocr ocs oct oeb oec oee oen oeo oer oes oet oey on- onb onc one onn ono onr ons ont ony oo- oob ooc oon ooo oor oos oot or- orb orc ore orn oro orr ors ort ory os- osb osc ose osn oso osr oss ost ot- otb otc ote otn oto otr ots ott oye oyo oys rbb rbc rbe rbn rbo rbr rbs rbt rcb rcc rce rcn rco rcr rcs rct re- reb rec ree ren reo rer res ret rey rnb rnc rnn rno rnr rns rnt rny rob roc roe ron roo ror ros rot roy rrb rrc rrn rrr rrs rrt rsb rsc rse rsn rso rsr rss rst rtb rtc rte rtn rto rtr rts rtt rty ry- ryc rye ryn ryo ryr rys ryy sbb sbc sbe sbn sbo sbr sbs sbt sby scb scc sce scn sco scr scs sct se- seb sec see sen seo ser ses set sey snb snc sne snn sno snr sns snt sny sob soc soe son soo sor sos sot soy sr- srb src sre srn sro srr srs srt sry ss- ssb ssc sse ssn sso ssr sss sst stb stc ste stn sto str sts stt sty sy- syb syc sye syn syr sys syt tbb tbc tbe tbn tbo tbr tbs tbt tcb tcc tce tcn tco tcr tcs tct te- teb tec tee ten teo ter tes tet tey tnb tnc tne tnn tno tnr tns tnt to- tob toc toe ton too tor tos tot toy trb trc tre trn tro trr trs trt try tsb tsc tse tsn tso tsr tss tst tsy ttb ttc tte ttn tto ttr tts ttt tty tyc tye tyn tyo tyr tys tyt ybc ybe ybr ybs yby ycc yce yco ycs ycy yeb yec yee yen yeo yer yes yet yey yne ynn yns yny yob yoc yoe yon yoo yor yos yot yoy yrc yre yrn yro yrs yrt ysb ysc yse yso ysr yss yst ysy ytc yte ytn yto ytr yts ytt yyb yyc yye yys yyt yyy