-er -ey bbb bbe bbi bbk bbn bbr bbs bby be- beb bee bei bek ben ber bes bey bi- bib bie bii bik bin bir bis biy bkb bke bkk bkn bkr bks bnb bne bni bnk bnn bnr bns brb bre bri brk brn brr brs bry bsb bse bsi bsk bsn bsr bss bsy by- bye byi byk byn byr bys ebb ebe ebi ebk ebn ebr ebs eby eeb eee eek een eer ees eey eib eie eii eik ein eir eis ekb eke eki ekr eks eky en- enb ene eni enk enn enr ens eny erb ere eri erk ern err ers ery es- esb ese esi esk esn esr ess esy eye eyn eyr eys ibb ibe ibi ibk ibn ibr ibs iby ie- iee iei iek ien ier ies iey iib iie iii iin iir iis ikb ike iki ikk ikr iks in- inb ine ini ink inn inr ins iny ir- irb ire iri irk irn irr irs iry is- isb ise isi isk isn isr iss isy iye iyr iys iyy kbb kbe kbi kbk kbn kbr kbs ke- keb kee kei kek ken ker kes key kib kie kii kik kin kir kis kkb kke kki kkk kkn kkr kks kky kn- kne kni knk knn knr kri krk krn krr krs kry ksb kse ksi ksk ksn ksr kss kye kyn kyr kys n-i nbb nbe nbi nbk nbn nbr nbs ne- neb nee nei nek nen ner nes ney nib nie nii nik nin nir nis nke nki nkk nkn nkr nks nky nnb nne nni nnk nnn nns nrb nre nri nrk nrn nrr nrs nry nsb nse nsi nsk nsn nsr nss nsy nye nyk nyn nys nyy rbb rbe rbi rbk rbn rbr rbs re- reb ree rei rek ren rer res rey rib rie rii rik rin rir ris riy rkb rke rkk rks rky rnb rni rnn rnr rns rny rrb rri rrk rrn rrr rrs rsb rse rsi rsk rsn rsr rss ry- rye ryk ryn ryr rys ryy sbb sbe sbi sbk sbn sbr sbs sby se- seb see sei sek sen ser ses sey sib sie sii sik sin sir sis sk- skb ske ski skk skr sks sky snb sne sni snk snn snr sns sny sr- srb sre sri srk srn srr srs sry ss- ssb sse ssi ssk ssn ssr sss sy- syb sye syi syk syn syr sys ybe ybi ybr ybs yby yeb yee yei yek yen yer yes yey yie yii yin yir yis yki ykk ykn yne ynk ynn yns yny yre yrn yrs ysb yse ysi ysk ysr yss ysy yyb yye yys yyy