b-u bbb bbg bbr bbs bbt bbu bby bgb bgg bgr bgs bgt bgu brb brg brr brs brt bru bry bsb bsg bsr bss bst bsu bsy btb btg btr bts btt btu bty bub bug bur bus but buu buy by- byg byr bys byt byu gbg gbr gbs gbt gbu gby ggb ggg ggr ggs ggt ggu grb grg grr grs grt gru gry gsb gsg gsr gss gst gsu gtb gtg gtr gts gtt gtu gty gu- gub gug gur gus gut guu guy gy- gyb gyr gys rbb rbg rbr rbs rbt rbu rgb rgg rgr rgs rgt rrb rrg rrr rrs rrt rru rsb rsg rsr rss rst rsu rtb rtg rtr rts rtt rtu rty rub rug rur rus rut ruu ruy ry- ryg ryr rys ryu ryy sbb sbg sbr sbs sbt sbu sby sgb sgg sgr sgs sgt sgu sr- srb srg srr srs srt sry ss- ssb ssg ssr sss sst ssu stb stg str sts stt stu sty sub sug sur sus sut suu suy sy- syb syg syr sys syt syu tbb tbg tbr tbs tbt tbu tgb tgg tgr tgs tgt tgu tgy trb trg trr trs trt tru try tsb tsg tsr tss tst tsu tsy ttb ttg ttr tts ttt ttu tty tub tug tur tus tut tuu tuy tyg tyr tys tyt ubb ubg ubr ubs ubt ubu uby ugb ugg ugr ugs ugt ugu ur- urb urg urr urs urt uru ury usb usg usr uss ust usu utb utr uts utt utu uty uug uur uus uut uuu uys uyu ybg ybr ybs yby yrg yrs yrt yru ysb ysg ysr yss yst ysu ysy ytr yts ytt ytu yug yur yus yut yuu yuy yyb yyg yys yyt yyu yyy