-er -ey bbb bbe bbk bbn bbo bbr bbs bbt bby be- beb bee bek ben beo ber bes bet bey bkb bke bkk bkn bko bkr bks bkt bnb bne bnk bnn bno bnr bns bnt bob boe bok bon boo bor bos bot boy brb bre brk brn bro brr brs brt bry bsb bse bsk bsn bso bsr bss bst bsy btb bte btk btn bto btr bts btt bty by- bye byk byn byo byr bys byt ebb ebe ebk ebn ebo ebr ebs ebt eby eeb eee eek een eeo eer ees eet eey ekb eke eko ekr eks ekt eky en- enb ene enk enn eno enr ens ent eny eo- eob eoe eok eon eoo eor eos eot erb ere erk ern ero err ers ert ery es- esb ese esk esn eso esr ess est esy etb ete etk etn eto etr ets ett ety eye eyn eyo eyr eys eyt k-t kbb kbe kbk kbn kbo kbr kbs ke- keb kee kek ken keo ker kes ket key kkb kke kkk kkn kkr kks kkt kky kn- kne knk knn kno knr knt kob koe kok kon koo kor kos kot koy krk krn kro krr krs krt kry ksb kse ksk ksn kso ksr kss kst ktb kte ktk ktn kto ktr kts ktt kye kyn kyo kyr kys kyt nbb nbe nbk nbn nbo nbr nbs nbt ne- neb nee nek nen neo ner nes net ney nke nkk nkn nko nkr nks nkt nky nnb nne nnk nnn nno nns nnt no- nob noe nok non noo nor nos not noy nrb nre nrk nrn nro nrr nrs nrt nry nsb nse nsk nsn nso nsr nss nst nsy ntb nte ntk ntn nto ntr nts ntt nye nyk nyn nyo nys nyt nyy ob- obb obe obk obn obo obr obs obt oby oeb oee oen oeo oer oes oet oey okb oke okk oko okr oks on- onb one onk onn ono onr ons ont ony oo- oob ook oon ooo oor oos oot or- orb ore ork orn oro orr ors ort ory os- osb ose osk osn oso osr oss ost ot- otb ote otk otn oto otr ots ott oye oyo oys rbb rbe rbk rbn rbo rbr rbs rbt re- reb ree rek ren reo rer res ret rey rkb rke rkk rko rks rkt rky rnb rnn rno rnr rns rnt rny rob roe rok ron roo ror ros rot roy rrb rrk rrn rrr rrs rrt rsb rse rsk rsn rso rsr rss rst rtb rte rtk rtn rto rtr rts rtt rty ry- rye ryk ryn ryo ryr rys ryy sbb sbe sbk sbn sbo sbr sbs sbt sby se- seb see sek sen seo ser ses set sey sk- skb ske skk sko skr sks skt sky snb sne snk snn sno snr sns snt sny sob soe sok son soo sor sos sot soy sr- srb sre srk srn sro srr srs srt sry ss- ssb sse ssk ssn sso ssr sss sst stb ste stk stn sto str sts stt sty sy- syb sye syk syn syr sys syt tbb tbe tbk tbn tbo tbr tbs tbt te- teb tee tek ten teo ter tes tet tey tkb tke tkk tko tkr tks tkt tky tnb tne tnk tnn tno tnr tns tnt to- tob toe tok ton too tor tos tot toy trb tre trk trn tro trr trs trt try tsb tse tsk tsn tso tsr tss tst tsy ttb tte ttk ttn tto ttr tts ttt tty tye tyn tyo tyr tys tyt ybe ybr ybs yby yeb yee yek yen yeo yer yes yet yey ykk ykn yne ynk ynn yns yny yob yoe yok yon yoo yor yos yot yoy yre yrn yro yrs yrt ysb yse ysk yso ysr yss yst ysy yte ytk ytn yto ytr yts ytt yyb yye yys yyt yyy