-er -ey bbb bbe bbg bbo bbr bbt bby be- beb bee beg beo ber bet bey bgb bge bgg bgo bgr bgt bob boe bog boo bor bot boy brb bre brg bro brr brt bry btb bte btg bto btr btt bty by- bye byg byo byr byt ebb ebe ebg ebo ebr ebt eby eeb eee eeg eeo eer eet eey egb ege egg ego egr egt egy eo- eob eoe eog eoo eor eot erb ere erg ero err ert ery etb ete etg eto etr ett ety eye eyo eyr eyt gbe gbg gbo gbr gbt gby ge- geb gee geg geo ger get gey ggb ggg ggo ggr ggt gob goe gog goo gor got goy grb gre grg gro grr grt gry gtb gte gtg gto gtr gtt gty gy- gyb gye gyo gyr ob- obb obe obg obo obr obt oby oeb oee oeg oeo oer oet oey oge ogg ogo ogt ogy oo- oob oog ooo oor oot or- orb ore org oro orr ort ory ot- otb ote otg oto otr ott oye oyo rbb rbe rbg rbo rbr rbt re- reb ree reg reo rer ret rey rgb rge rgg rgo rgr rgt rob roe rog roo ror rot roy rrb rrg rrr rrt rtb rte rtg rto rtr rtt rty ry- rye ryg ryo ryr ryy tbb tbe tbg tbo tbr tbt te- teb tee teg teo ter tet tey tgb tge tgg tgo tgr tgt tgy to- tob toe tog too tor tot toy trb tre trg tro trr trt try ttb tte ttg tto ttr ttt tty tye tyg tyo tyr tyt ybe ybg ybr yby yeb yee yeg yeo yer yet yey ygo yob yoe yog yoo yor yot yoy yre yrg yro yrt yte yto ytr ytt yyb yye yyg yyt yyy