-er -ey a-a a-b aaa aab aae aan aar aas aay ab- aba abb abe abn abr abs aby aea aeb aee aen aer aes aey an- ana anb ane ann anr ans any ar- ara arb are arn arr ars ary as- asa asb ase asn asr ass asy ay- aya aye ayn ayr ays baa bab bae ban bar bas bay bba bbb bbe bbn bbr bbs bby be- bea beb bee ben ber bes bey bna bnb bne bnn bnr bns bra brb bre brn brr brs bry bsa bsb bse bsn bsr bss bsy by- bya bye byn byr bys eaa eab eae ean ear eas eba ebb ebe ebn ebr ebs eby eea eeb eee een eer ees eey en- ena enb ene enn enr ens eny era erb ere ern err ers ery es- esa esb ese esn esr ess esy eya eye eyn eyr eys naa nab nae nan nar nas nay nba nbb nbe nbn nbr nbs ne- nea neb nee nen ner nes ney nna nnb nne nnn nns nra nrb nre nrn nrr nrs nry nsa nsb nse nsn nsr nss nsy nya nye nyn nys nyy ra- raa rab rae ran rar ras ray rba rbb rbe rbn rbr rbs re- rea reb ree ren rer res rey rna rnb rnn rnr rns rny rra rrb rrn rrr rrs rsa rsb rse rsn rsr rss ry- rya rye ryn ryr rys ryy saa sab sae san sar sas say sba sbb sbe sbn sbr sbs sby se- sea seb see sen ser ses sey sna snb sne snn snr sns sny sr- sra srb sre srn srr srs sry ss- ssa ssb sse ssn ssr sss sy- sya syb sye syn syr sys yaa yab yae yan yar yas yay ybe ybr ybs yby yea yeb yee yen yer yes yey yna yne ynn yns yny yra yre yrn yrs ysa ysb yse ysr yss ysy yyb yye yys yyy