-ey a-a a-b a-t aaa aab aae aag aas aat aay ab- aba abb abe abg abs abt aby aea aeb aee aeg aes aet aey ag- aga agb age agg ags agt agy as- asa asb ase asg ass ast asy at- ata atb ate atg ats att ay- aya aye ays ayt baa bab bae bag bas bat bay bba bbb bbe bbg bbs bbt bby be- bea beb bee beg bes bet bey bga bgb bge bgg bgs bgt bsa bsb bse bsg bss bst bsy bta btb bte btg bts btt bty by- bya bye byg bys byt eaa eab eae eag eas eat eba ebb ebe ebg ebs ebt eby eea eeb eee eeg ees eet eey ega egb ege egg egs egt egy es- esa esb ese esg ess est esy eta etb ete etg ets ett ety eya eye eys eyt gaa gab gae gag gas gat gay gba gbe gbg gbs gbt gby ge- gea geb gee geg ges get gey gga ggb ggg ggs ggt gsa gsb gse gsg gss gst gta gtb gte gtg gts gtt gty gy- gya gyb gye gys saa sab sae sag sas sat say sba sbb sbe sbg sbs sbt sby se- sea seb see seg ses set sey sga sgb sge sgg sgs sgt ss- ssa ssb sse ssg sss sst sta stb ste stg sts stt sty sy- sya syb sye syg sys syt taa tab tae tag tas tat tay tba tbb tbe tbg tbs tbt te- tea teb tee teg tes tet tey tga tgb tge tgg tgs tgt tgy tsa tsb tse tsg tss tst tsy tta ttb tte ttg tts ttt tty tya tye tyg tys tyt yaa yab yae yag yas yat yay ybe ybg ybs yby yea yeb yee yeg yes yet yey yga ysa ysb yse ysg yss yst ysy yta yte yts ytt yyb yye yyg yys yyt yyy