-er -ey a-a a-b a-i aaa aab aae aai aan aar aas aay ab- aba abb abe abi abn abr abs aby aea aeb aee aei aen aer aes aey ai- aia aib aie aii ain air ais aiy an- ana anb ane ani ann anr ans any ar- ara arb are ari arn arr ars ary as- asa asb ase asi asn asr ass asy ay- aya aye ayi ayn ayr ays baa bab bae bai ban bar bas bay bba bbb bbe bbi bbn bbr bbs bby be- bea beb bee bei ben ber bes bey bi- bia bib bie bii bin bir bis biy bna bnb bne bni bnn bnr bns bra brb bre bri brn brr brs bry bsa bsb bse bsi bsn bsr bss bsy by- bya bye byi byn byr bys eaa eab eae eai ean ear eas eba ebb ebe ebi ebn ebr ebs eby eea eeb eee een eer ees eey eia eib eie eii ein eir eis en- ena enb ene eni enn enr ens eny era erb ere eri ern err ers ery es- esa esb ese esi esn esr ess esy eya eye eyn eyr eys ia- iaa iab iae iai ian iar ias iba ibb ibe ibi ibn ibr ibs iby ie- iea iee iei ien ier ies iey iia iib iie iii iin iir iis in- ina inb ine ini inn inr ins iny ir- ira irb ire iri irn irr irs iry is- isa isb ise isi isn isr iss isy iya iye iyr iys iyy n-i naa nab nae nai nan nar nas nay nba nbb nbe nbi nbn nbr nbs ne- nea neb nee nei nen ner nes ney nia nib nie nii nin nir nis nna nnb nne nni nnn nns nra nrb nre nri nrn nrr nrs nry nsa nsb nse nsi nsn nsr nss nsy nya nye nyn nys nyy ra- raa rab rae rai ran rar ras ray rba rbb rbe rbi rbn rbr rbs re- rea reb ree rei ren rer res rey ria rib rie rii rin rir ris riy rna rnb rni rnn rnr rns rny rra rrb rri rrn rrr rrs rsa rsb rse rsi rsn rsr rss ry- rya rye ryn ryr rys ryy saa sab sae sai san sar sas say sba sbb sbe sbi sbn sbr sbs sby se- sea seb see sei sen ser ses sey sia sib sie sii sin sir sis sna snb sne sni snn snr sns sny sr- sra srb sre sri srn srr srs sry ss- ssa ssb sse ssi ssn ssr sss sy- sya syb sye syi syn syr sys yaa yab yae yai yan yar yas yay ybe ybi ybr ybs yby yea yeb yee yei yen yer yes yey yie yii yin yir yis yna yne ynn yns yny yra yre yrn yrs ysa ysb yse ysi ysr yss ysy yyb yye yys yyy