b-u bbb bbc bbg bbh bbr bbs bbu bcb bcc bcg bch bcr bcs bcu bgb bgc bgg bgh bgr bgs bgu bhb bhc bhg bhh bhr bhs bhu brb brg brh brr brs bru bsb bsc bsg bsh bsr bss bsu bub buc bug buh bur bus buu c-- cbb cbc cbg cbh cbr cbs cbu ccb ccc ccg cch ccr ccs ccu cgb cgc cgg cgh cgr cgs cgu ch- chb chc chg chh chr chs chu crb crc crg crh crr crs cru csb csc csg csh csr css csu cub cuc cug cuh cur cus cuu gbc gbg gbh gbr gbs gbu gcb gcc gcg gch gcr gcs gcu ggb ggc ggg ggh ggr ggs ggu ghb ghc ghg ghh ghr ghs grb grc grg grh grr grs gru gsb gsc gsg gsr gss gsu gu- gub guc gug gur gus guu hbb hbc hbg hbh hbr hbs hbu hcb hcc hcg hch hcr hcs hgb hgc hgg hgh hgr hgs hgu hhb hhc hhg hhh hhr hhs hhu hr- hrb hrc hrg hrh hrr hrs hru hsb hsc hsg hsh hsr hss hsu hub huc hug huh hur hus huu rbb rbc rbg rbh rbr rbs rbu rcb rcc rcg rch rcr rcs rcu rgb rgc rgg rgh rgr rgs rh- rhb rhc rhg rhh rhr rhs rhu rrb rrc rrg rrh rrr rrs rru rsb rsc rsg rsh rsr rss rsu rub ruc rug ruh rur rus ruu sbb sbc sbg sbh sbr sbs sbu scb scc scg sch scr scs scu sgb sgc sgg sgh sgr sgs sgu sh- shb shc shg shh shr shs shu sr- srb src srg srh srr srs ss- ssb ssc ssg ssh ssr sss ssu sub suc sug suh sur sus suu ubb ubc ubg ubh ubr ubs ubu ucb ucc ucg uch ucr ucs ucu ugb ugc ugg ugh ugr ugs ugu uhb uhc uhh uhr uhs uhu ur- urb urc urg urr urs uru usb usc usg ush usr uss usu uuc uug uur uus uuu