b-p bbb bbd bbo bbp bbr bby bdb bdd bdo bdp bdr bdy bdz bob bod boo bop bor boy boz bpb bpd bpo bpp bpr bpy brb brd bro brp brr bry brz by- byd byo byp byr byz bzd bzo bzp bzr bzz dbb dbd dbo dbp dbr dby dbz ddb ddd ddo ddp ddr ddy ddz dob dod doo dop dor doy doz dpb dpd dpo dpp dpr dpz drb drd dro drp drr dry drz dy- dyb dyd dyo dyp dyr dyy dzb dzd dzo dzp dzr ob- obb obd obo obp obr oby odb odd odo odp odr oo- oob ood ooo oop oor op- opb opd opo opp opr opy or- orb ord oro orp orr ory orz oyd oyo ozo ozz p-p pbb pbd pbo pbp pbr pby pbz pdb pdd pdo pdp pdr pdz pob pod poo pop por poy poz ppb ppd ppo ppp ppr ppz prb prd pro prp prr pry prz py- pyb pyd pyo pyr pzp rbb rbd rbo rbp rbr rdb rdd rdo rdp rdr rdy rob rod roo rop ror roy roz rpb rpd rpo rpp rpr rpz rrb rrd rrp rrr ry- ryd ryo ryr ryy ryz rzb rzo rzy ybp ybr yby ybz ydo ydy yob yod yoo yop yor yoy ypd ypo yro yrp yyb yyy yyz yzb yzr yzy zbb zbr zby zo- zob zod zoo zor zpo zpp zpr zro zrp zzr zzy zzz