b-p bbb bbg bbo bbp bbr bbs bby bgb bgg bgo bgp bgr bgs bob bog boo bop bor bos boy bpb bpg bpo bpp bpr bps bpy brb brg bro brp brr brs bry bsb bsg bso bsp bsr bss bsy by- byg byo byp byr bys g-p gbg gbo gbp gbr gbs gby ggb ggg ggo ggp ggr ggs gob gog goo gop gor gos goy gpb gpg gpo gpp gpr gps grb grg gro grp grr grs gry gsb gsg gso gsp gsr gss gy- gyb gyo gyp gyr gys ob- obb obg obo obp obr obs oby ogg ogo ogp ogs ogy oo- oob oog ooo oop oor oos op- opb opg opo opp opr ops opy or- orb org oro orp orr ors ory os- osb osg oso osp osr oss oyo oys p-p pbb pbg pbo pbp pbr pbs pby pgb pgg pgo pgp pgr pgs pgy pob pog poo pop por pos poy ppb ppg ppo ppp ppr pps prb prg pro prp prr prs pry ps- psb psg pso psp psr pss psy py- pyb pyg pyo pyr pys rbb rbg rbo rbp rbr rbs rgb rgg rgo rgp rgr rgs rob rog roo rop ror ros roy rpb rpg rpo rpp rpr rps rrb rrg rrp rrr rrs rsb rsg rso rsp rsr rss ry- ryg ryo ryr rys ryy sbb sbg sbo sbp sbr sbs sby sgb sgg sgo sgp sgr sgs sob sog soo sop sor sos soy spb spg spo spp spr sps spy sr- srb srg sro srp srr srs sry ss- ssb ssg sso ssp ssr sss sy- syb syg syp syr sys ybg ybp ybr ybs yby ygo yob yog yoo yop yor yos yoy ypg ypo yps yrg yro yrp yrs ysb ysg yso ysp ysr yss ysy yyb yyg yys yyy