-er -ey a-a a-b aaa aab aae aag aar aas aay ab- aba abb abe abg abr abs aby aea aeb aee aeg aer aes aey ag- aga agb age agg agr ags agy ar- ara arb are arg arr ars ary as- asa asb ase asg asr ass asy ay- aya aye ayr ays baa bab bae bag bar bas bay bba bbb bbe bbg bbr bbs bby be- bea beb bee beg ber bes bey bga bgb bge bgg bgr bgs bra brb bre brg brr brs bry bsa bsb bse bsg bsr bss bsy by- bya bye byg byr bys eaa eab eae eag ear eas eba ebb ebe ebg ebr ebs eby eea eeb eee eeg eer ees eey ega egb ege egg egr egs egy era erb ere erg err ers ery es- esa esb ese esg esr ess esy eya eye eyr eys gaa gab gae gag gar gas gay gba gbe gbg gbr gbs gby ge- gea geb gee geg ger ges gey gga ggb ggg ggr ggs gra grb gre grg grr grs gry gsa gsb gse gsg gsr gss gy- gya gyb gye gyr gys ra- raa rab rae rag rar ras ray rba rbb rbe rbg rbr rbs re- rea reb ree reg rer res rey rga rgb rge rgg rgr rgs rra rrb rrg rrr rrs rsa rsb rse rsg rsr rss ry- rya rye ryg ryr rys ryy saa sab sae sag sar sas say sba sbb sbe sbg sbr sbs sby se- sea seb see seg ser ses sey sga sgb sge sgg sgr sgs sr- sra srb sre srg srr srs sry ss- ssa ssb sse ssg ssr sss sy- sya syb sye syg syr sys yaa yab yae yag yar yas yay ybe ybg ybr ybs yby yea yeb yee yeg yer yes yey yga yra yre yrg yrs ysa ysb yse ysg ysr yss ysy yyb yye yyg yys yyy