-er -ey b-u bbb bbd bbe bbg bbr bbu bbx bby bdb bdd bde bdg bdr bdu bdx bdy be- beb bed bee beg ber beu bex bey bgb bgd bge bgg bgr bgu bgx brb brd bre brg brr bru brx bry bub bud bue bug bur buu bux buy bxb bxd bxx by- byd bye byg byr byu dbb dbd dbe dbg dbr dbu dbx dby ddb ddd dde ddg ddr ddu ddx ddy de- deb ded dee deg der deu dex dey dgd dge dgg dgr dgu drb drd dre drg drr dru drx dry dub dud due dug dur dux duy dxd dxr dxx dy- dyb dyd dye dyr dyu dyy ebb ebd ebe ebg ebr ebu ebx eby ed- edb edd ede edg edr edu edx edy eeb eed eee eeg eer eex eey egb egd ege egg egr egu egx egy erb erd ere erg err eru ery eu- eub eud eue eug eur eux ex- exd exe exr exu exx exy eyd eye eyr g-d gbd gbe gbg gbr gbu gbx gby gdb gdd gde gdr gdu gdx ge- geb ged gee geg ger geu gex gey ggb ggd ggg ggr ggu grb grd gre grg grr gru grx gry gu- gub gud gue gug gur guu guy gy- gyb gyd gye gyr rbb rbd rbe rbg rbr rbu rbx rdb rdd rde rdg rdr rdu rdx rdy re- reb red ree reg rer reu rex rey rgb rgd rge rgg rgr rgx rrb rrd rrg rrr rru rub rud rue rug rur ruu rux ruy rxr ry- ryd rye ryg ryr ryu ryy ubb ube ubg ubr ubu ubx uby udb udd ude udg udr udu udx ueb ued uee ueg uer uey ugb uge ugg ugr ugu ugx ur- urb urd ure urg urr uru urx ury uue uug uur uuu uxb uxr uxu uyu xbe xbr xbx xdb xde xdr xed xee xeg xer xeu xex xge xrd xrx xry xue xxx xxy xyr xyy ybe ybg ybr yby yde ydg ydy yeb yed yee yeg yer yex yey yre yrg yru yud yue yug yur yuu yux yuy yxe yxy yyb yye yyg yyu yyy