-er -ey b-u bbb bbd bbe bbg bbi bbr bbu bby bdb bdd bde bdg bdi bdr bdu bdy be- beb bed bee beg bei ber beu bey bgb bgd bge bgg bgi bgr bgu bi- bib bid bie big bii bir biu biy brb brd bre brg bri brr bru bry bub bud bue bug bui bur buu buy by- byd bye byg byi byr byu dbb dbd dbe dbg dbi dbr dbu dby ddb ddd dde ddg ddi ddr ddu ddy de- deb ded dee deg dei der deu dey dgd dge dgg dgi dgr dgu di- dib did die dig dii dir diu diy drb drd dre drg dri drr dru dry dub dud due dug dui dur duy dy- dyb dyd dye dyr dyu dyy ebb ebd ebe ebg ebi ebr ebu eby ed- edb edd ede edg edi edr edu edy eeb eed eee eeg eer eey egb egd ege egg egi egr egu egy eib eid eie eig eii eir eiu erb erd ere erg eri err eru ery eu- eub eud eue eug eui eur eyd eye eyr g-d gbd gbe gbg gbi gbr gbu gby gdb gdd gde gdi gdr gdu ge- geb ged gee geg gei ger geu gey ggb ggd ggg ggi ggr ggu gib gid gie gig gii gir giu giy grb grd gre grg gri grr gru gry gu- gub gud gue gug gui gur guu guy gy- gyb gyd gye gyr i-d ibb ibd ibe ibg ibi ibr ibu iby idb idd ide idg idi idr idu idy ie- ied iee ieg iei ier iey igb igd ige igg igi igr igu igy iib iid iie iii iir iiu ir- irb ird ire irg iri irr iru iry iu- iub iud iue iug iui iur iye iyr iyy rbb rbd rbe rbg rbi rbr rbu rdb rdd rde rdg rdi rdr rdu rdy re- reb red ree reg rei rer reu rey rgb rgd rge rgg rgi rgr rib rid rie rig rii rir riy rrb rrd rrg rri rrr rru rub rud rue rug rui rur ruu ruy ry- ryd rye ryg ryr ryu ryy ubb ube ubg ubi ubr ubu uby udb udd ude udg udi udr udu ueb ued uee ueg uei uer uey ugb uge ugg ugi ugr ugu uib uid uie uig uii uir uiu ur- urb urd ure urg uri urr uru ury uue uug uur uuu uyi uyu ybe ybg ybi ybr yby yde ydg ydy yeb yed yee yeg yei yer yey yid yie yig yii yir yre yrg yru yud yue yug yui yur yuu yuy yyb yye yyg yyu yyy