bbb bbg bbh bbo bbr bbs bgb bgg bgh bgo bgr bgs bhb bhg bhh bho bhr bhs bob bog boh boo bor bos brb brg brh bro brr brs bsb bsg bsh bso bsr bss gbg gbh gbo gbr gbs ggb ggg ggh ggo ggr ggs ghb ghg ghh gho ghr ghs gob gog goh goo gor gos grb grg grh gro grr grs gsb gsg gso gsr gss hbb hbg hbh hbo hbr hbs hgb hgg hgh hgo hgr hgs hhb hhg hhh hho hhr hhs hob hog hoh hoo hor hos hr- hrb hrg hrh hro hrr hrs hsb hsg hsh hsr hss ob- obb obg obh obo obr obs ogg ogh ogo ogs ohg ohh oho ohr ohs oo- oob oog ooh ooo oor oos or- orb org orh oro orr ors os- osb osg osh oso osr oss rbb rbg rbh rbo rbr rbs rgb rgg rgh rgo rgr rgs rh- rhb rhg rhh rho rhr rhs rob rog roh roo ror ros rrb rrg rrh rrr rrs rsb rsg rsh rso rsr rss sbb sbg sbh sbo sbr sbs sgb sgg sgh sgo sgr sgs sh- shb shg shh sho shr shs sob sog soh soo sor sos sr- srb srg srh sro srr srs ss- ssb ssg ssh sso ssr sss