-er -ey bbb bbd bbe bbf bbr bbt bby bdb bdd bde bdf bdr bdt bdy be- beb bed bee bef ber bet bey bfb bfd bfe bff bfr bft bfy brb brd bre brf brr brt bry btb btd bte btf btr btt bty by- byd bye byf byr byt dbb dbd dbe dbf dbr dbt dby ddb ddd dde ddf ddr ddt ddy de- deb ded dee def der det dey dfb dfd dfe dff dfr dft drb drd dre drr drt dry dtb dtd dte dtf dtr dtt dty dy- dyb dyd dye dyr dyy ebb ebd ebe ebf ebr ebt eby ed- edb edd ede edf edr edt edy eeb eed eee eef eer eet eey ef- efb efd efe eff efr eft erb erd ere erf err ert ery etb etd ete etf etr ett ety eyd eye eyr eyt fbb fbd fbe fbf fbr fbt fdb fdd fde fdf fdr fdt feb fed fee fef fer fet fey ffd ffe fff ffr fft ffy frb frd fre frf frr frt fry ftb ftd fte ftf ftr ftt fty fy- fyb fye rbb rbd rbe rbf rbr rbt rdb rdd rde rdf rdr rdt rdy re- reb red ree ref rer ret rey rfb rfd rfe rff rfr rft rrb rrd rrf rrr rrt rtb rtd rte rtf rtr rtt rty ry- ryd rye ryf ryr ryy tbb tbd tbe tbf tbr tbt tdb tdd tde tdf tdr tdt tdy te- teb ted tee tef ter tet tey tfb tfd tfe tff tfr tft trb trd tre trf trr trt try ttb ttd tte ttf ttr ttt tty tyd tye tyf tyr tyt ybe ybf ybr yby yde ydt ydy yeb yed yee yef yer yet yey yfd yfe yff yfr yft yre yrf yrt ytd yte ytf ytr ytt yyb yye yyf yyt yyy