b-p bbb bbd bbo bbp bbr bbs bby bdb bdd bdo bdp bdr bds bdy bob bod boo bop bor bos boy bpb bpd bpo bpp bpr bps bpy brb brd bro brp brr brs bry bsb bsd bso bsp bsr bss bsy by- byd byo byp byr bys dbb dbd dbo dbp dbr dbs dby ddb ddd ddo ddp ddr dds ddy dob dod doo dop dor dos doy dpb dpd dpo dpp dpr dps drb drd dro drp drr drs dry dsb dsd dso dsp dsr dss dsy dy- dyb dyd dyo dyp dyr dys dyy ob- obb obd obo obp obr obs oby odb odd odo odp odr ods oo- oob ood ooo oop oor oos op- opb opd opo opp opr ops opy or- orb ord oro orp orr ors ory os- osb osd oso osp osr oss oyd oyo oys p-p pbb pbd pbo pbp pbr pbs pby pdb pdd pdo pdp pdr pds pob pod poo pop por pos poy ppb ppd ppo ppp ppr pps prb prd pro prp prr prs pry ps- psb psd pso psp psr pss psy py- pyb pyd pyo pyr pys rbb rbd rbo rbp rbr rbs rdb rdd rdo rdp rdr rds rdy rob rod roo rop ror ros roy rpb rpd rpo rpp rpr rps rrb rrd rrp rrr rrs rsb rsd rso rsp rsr rss ry- ryd ryo ryr rys ryy sbb sbd sbo sbp sbr sbs sby sdb sdd sdo sdp sdr sds sdy sob sod soo sop sor sos soy spb spd spo spp spr sps spy sr- srb srd sro srp srr srs sry ss- ssb ssd sso ssp ssr sss sy- syb syd syp syr sys ybp ybr ybs yby ydo yds ydy yob yod yoo yop yor yos yoy ypd ypo yps yro yrp yrs ysb yso ysp ysr yss ysy yyb yys yyy