-er -ey bbb bbe bbf bbi bbk bbn bbr bbs bby be- beb bee bef bei bek ben ber bes bey bfb bfe bff bfi bfn bfr bfs bfy bi- bib bie bif bii bik bin bir bis biy bkb bke bkf bkk bkn bkr bks bnb bne bnf bni bnk bnn bnr bns brb bre brf bri brk brn brr brs bry bsb bse bsf bsi bsk bsn bsr bss bsy by- bye byf byi byk byn byr bys ebb ebe ebf ebi ebk ebn ebr ebs eby eeb eee eef eek een eer ees eey ef- efb efe eff efi efr efs eib eie eif eii eik ein eir eis ekb eke ekf eki ekr eks eky en- enb ene enf eni enk enn enr ens eny erb ere erf eri erk ern err ers ery es- esb ese esf esi esk esn esr ess esy eye eyn eyr eys fbb fbe fbf fbi fbk fbn fbr fbs feb fee fef fei fek fen fer fes fey ffe fff ffi ffk ffn ffr ffs ffy fib fie fif fii fik fin fir fis fkb fkf fki fkk fnb fne fnf fni fnk fnn fnr fns frb fre frf fri frk frn frr frs fry fsb fse fsf fsi fsk fsn fsr fss fy- fyb fye fyi fyk fyn i-f ibb ibe ibf ibi ibk ibn ibr ibs iby ie- iee ief iei iek ien ier ies iey ifb ife iff ifi ifn ifr ifs ify iib iie iif iii iin iir iis ikb ike ikf iki ikk ikr iks in- inb ine inf ini ink inn inr ins iny ir- irb ire irf iri irk irn irr irs iry is- isb ise isf isi isk isn isr iss isy iye iyr iys iyy kbb kbe kbf kbi kbk kbn kbr kbs ke- keb kee kef kei kek ken ker kes key kff kfi kfs kib kie kif kii kik kin kir kis kkb kke kki kkk kkn kkr kks kky kn- kne knf kni knk knn knr krf kri krk krn krr krs kry ksb kse ksf ksi ksk ksn ksr kss kye kyn kyr kys n-i nbb nbe nbf nbi nbk nbn nbr nbs ne- neb nee nef nei nek nen ner nes ney nfb nfe nff nfi nfk nfn nfr nfs nib nie nif nii nik nin nir nis nke nkf nki nkk nkn nkr nks nky nnb nne nnf nni nnk nnn nns nrb nre nrf nri nrk nrn nrr nrs nry nsb nse nsf nsi nsk nsn nsr nss nsy nye nyf nyk nyn nys nyy rbb rbe rbf rbi rbk rbn rbr rbs re- reb ree ref rei rek ren rer res rey rfb rfe rff rfi rfk rfn rfr rfs rib rie rif rii rik rin rir ris riy rkb rke rkf rkk rks rky rnb rni rnn rnr rns rny rrb rrf rri rrk rrn rrr rrs rsb rse rsf rsi rsk rsn rsr rss ry- rye ryf ryk ryn ryr rys ryy sbb sbe sbf sbi sbk sbn sbr sbs sby se- seb see sef sei sek sen ser ses sey sfb sfe sff sfi sfk sfn sfr sfs sib sie sif sii sik sin sir sis sk- skb ske skf ski skk skr sks sky snb sne snf sni snk snn snr sns sny sr- srb sre srf sri srk srn srr srs sry ss- ssb sse ssf ssi ssk ssn ssr sss sy- syb sye syi syk syn syr sys ybe ybf ybi ybr ybs yby yeb yee yef yei yek yen yer yes yey yfe yff yfr yfs yie yif yii yin yir yis yki ykk ykn yne ynk ynn yns yny yre yrf yrn yrs ysb yse ysi ysk ysr yss ysy yyb yye yyf yys yyy