bbb bbg bbr bbs bbt bgb bgg bgr bgs bgt brb brg brr brs brt bsb bsg bsr bss bst btb btg btr bts btt gbg gbr gbs gbt ggb ggg ggr ggs ggt grb grg grr grs grt gsb gsg gsr gss gst gtb gtg gtr gts gtt rbb rbg rbr rbs rbt rgb rgg rgr rgs rgt rrb rrg rrr rrs rrt rsb rsg rsr rss rst rtb rtg rtr rts rtt sbb sbg sbr sbs sbt sgb sgg sgr sgs sgt sr- srb srg srr srs srt ss- ssb ssg ssr sss sst stb stg str sts stt tbb tbg tbr tbs tbt tgb tgg tgr tgs tgt trb trg trr trs trt tsb tsg tsr tss tst ttb ttg ttr tts ttt