-er -ey a-a a-b a-t aaa aab aad aae aag aar aat aay ab- aba abb abd abe abg abr abt aby ad- ada adb add ade adg adr adt ady aea aeb aed aee aeg aer aet aey ag- aga agb agd age agg agr agt agy ar- ara arb ard are arg arr art ary at- ata atb atd ate atg atr att ay- aya ayd aye ayr ayt baa bab bad bae bag bar bat bay bba bbb bbd bbe bbg bbr bbt bby bda bdb bdd bde bdg bdr bdt bdy be- bea beb bed bee beg ber bet bey bga bgb bgd bge bgg bgr bgt bra brb brd bre brg brr brt bry bta btb btd bte btg btr btt bty by- bya byd bye byg byr byt daa dab dad dae dag dar dat day dba dbb dbd dbe dbg dbr dbt dby dda ddb ddd dde ddg ddr ddt ddy de- dea deb ded dee deg der det dey dga dgd dge dgg dgr dgt dra drb drd dre drg drr drt dry dta dtb dtd dte dtg dtr dtt dty dy- dya dyb dyd dye dyr dyy eaa eab ead eae eag ear eat eba ebb ebd ebe ebg ebr ebt eby ed- eda edb edd ede edg edr edt edy eea eeb eed eee eeg eer eet eey ega egb egd ege egg egr egt egy era erb erd ere erg err ert ery eta etb etd ete etg etr ett ety eya eyd eye eyr eyt g-d gaa gab gad gae gag gar gat gay gba gbd gbe gbg gbr gbt gby gda gdb gdd gde gdr gdt ge- gea geb ged gee geg ger get gey gga ggb ggd ggg ggr ggt gra grb grd gre grg grr grt gry gta gtb gtd gte gtg gtr gtt gty gy- gya gyb gyd gye gyr ra- raa rab rad rae rag rar rat ray rba rbb rbd rbe rbg rbr rbt rda rdb rdd rde rdg rdr rdt rdy re- rea reb red ree reg rer ret rey rga rgb rgd rge rgg rgr rgt rra rrb rrd rrg rrr rrt rta rtb rtd rte rtg rtr rtt rty ry- rya ryd rye ryg ryr ryy taa tab tad tae tag tar tat tay tba tbb tbd tbe tbg tbr tbt tda tdb tdd tde tdg tdr tdt tdy te- tea teb ted tee teg ter tet tey tga tgb tge tgg tgr tgt tgy tra trb trd tre trg trr trt try tta ttb ttd tte ttg ttr ttt tty tya tyd tye tyg tyr tyt yaa yab yad yae yag yar yat yay ybe ybg ybr yby yda yde ydg ydt ydy yea yeb yed yee yeg yer yet yey yga yra yre yrg yrt yta ytd yte ytr ytt yyb yye yyg yyt yyy