-er -ey b-u bbb bbe bbg bbr bbs bbu bby be- beb bee beg ber bes beu bey bgb bge bgg bgr bgs bgu brb bre brg brr brs bru bry bsb bse bsg bsr bss bsu bsy bub bue bug bur bus buu buy by- bye byg byr bys byu ebb ebe ebg ebr ebs ebu eby eeb eee eeg eer ees eey egb ege egg egr egs egu egy erb ere erg err ers eru ery es- esb ese esg esr ess esu esy eu- eub eue eug eur eus eye eyr eys gbe gbg gbr gbs gbu gby ge- geb gee geg ger ges geu gey ggb ggg ggr ggs ggu grb gre grg grr grs gru gry gsb gse gsg gsr gss gsu gu- gub gue gug gur gus guu guy gy- gyb gye gyr gys rbb rbe rbg rbr rbs rbu re- reb ree reg rer res reu rey rgb rge rgg rgr rgs rrb rrg rrr rrs rru rsb rse rsg rsr rss rsu rub rue rug rur rus ruu ruy ry- rye ryg ryr rys ryu ryy sbb sbe sbg sbr sbs sbu sby se- seb see seg ser ses seu sey sgb sge sgg sgr sgs sgu sr- srb sre srg srr srs sry ss- ssb sse ssg ssr sss ssu sub sue sug sur sus suu suy sy- syb sye syg syr sys syu ubb ube ubg ubr ubs ubu uby ueb uee ueg uer ues uey ugb uge ugg ugr ugs ugu ur- urb ure urg urr urs uru ury usb use usg usr uss usu uue uug uur uus uuu uys uyu ybe ybg ybr ybs yby yeb yee yeg yer yes yey yre yrg yrs yru ysb yse ysg ysr yss ysu ysy yue yug yur yus yuu yuy yyb yye yyg yys yyu yyy