-er -ey a-a a-b a-t aaa aab aae aag aan aar aat aay ab- aba abb abe abg abn abr abt aby aea aeb aee aeg aen aer aet aey ag- aga agb age agg agn agr agt agy an- ana anb ane ang ann anr ant any ar- ara arb are arg arn arr art ary at- ata atb ate atg atn atr att ay- aya aye ayn ayr ayt baa bab bae bag ban bar bat bay bba bbb bbe bbg bbn bbr bbt bby be- bea beb bee beg ben ber bet bey bga bgb bge bgg bgn bgr bgt bna bnb bne bng bnn bnr bnt bra brb bre brg brn brr brt bry bta btb bte btg btn btr btt bty by- bya bye byg byn byr byt eaa eab eae eag ean ear eat eba ebb ebe ebg ebn ebr ebt eby eea eeb eee eeg een eer eet eey ega egb ege egg egn egr egt egy en- ena enb ene eng enn enr ent eny era erb ere erg ern err ert ery eta etb ete etg etn etr ett ety eya eye eyn eyr eyt gaa gab gae gag gan gar gat gay gba gbe gbg gbn gbr gbt gby ge- gea geb gee geg gen ger get gey gga ggb ggg ggn ggr ggt gna gnb gne gnn gnr gnt gra grb gre grg grn grr grt gry gta gtb gte gtg gtn gtr gtt gty gy- gya gyb gye gyn gyr naa nab nae nag nan nar nat nay nba nbb nbe nbg nbn nbr nbt ne- nea neb nee neg nen ner net ney nga ngb nge ngg ngn ngt nna nnb nne nng nnn nnt nra nrb nre nrg nrn nrr nrt nry nta ntb nte ntg ntn ntr ntt nya nye nyg nyn nyt nyy ra- raa rab rae rag ran rar rat ray rba rbb rbe rbg rbn rbr rbt re- rea reb ree reg ren rer ret rey rga rgb rge rgg rgn rgr rgt rna rnb rng rnn rnr rnt rny rra rrb rrg rrn rrr rrt rta rtb rte rtg rtn rtr rtt rty ry- rya rye ryg ryn ryr ryy taa tab tae tag tan tar tat tay tba tbb tbe tbg tbn tbr tbt te- tea teb tee teg ten ter tet tey tga tgb tge tgg tgn tgr tgt tgy tna tnb tne tng tnn tnr tnt tra trb tre trg trn trr trt try tta ttb tte ttg ttn ttr ttt tty tya tye tyg tyn tyr tyt yaa yab yae yag yan yar yat yay ybe ybg ybr yby yea yeb yee yeg yen yer yet yey yga yna yne yng ynn yny yra yre yrg yrn yrt yta yte ytn ytr ytt yyb yye yyg yyt yyy