b-p bbb bbd bbi bbo bbp bbr bby bdb bdd bdi bdo bdp bdr bdy bi- bib bid bii bio bip bir biy bob bod boi boo bop bor boy bpb bpd bpi bpo bpp bpr bpy brb brd bri bro brp brr bry by- byd byi byo byp byr dbb dbd dbi dbo dbp dbr dby ddb ddd ddi ddo ddp ddr ddy di- dib did dii dio dip dir diy dob dod doi doo dop dor doy dpb dpd dpi dpo dpp dpr drb drd dri dro drp drr dry dy- dyb dyd dyo dyp dyr dyy i-d ibb ibd ibi ibo ibp ibr iby idb idd idi ido idp idr idy iib iid iii iio iip iir io- iob iod ioi ioo iop ior ipb ipd ipi ipo ipp ipr ipy ir- irb ird iri iro irp irr iry iyo iyr iyy o-i ob- obb obd obi obo obp obr oby odb odd odi odo odp odr oib oid oii oio oip oir oo- oob ood ooi ooo oop oor op- opb opd opi opo opp opr opy or- orb ord ori oro orp orr ory oyd oyi oyo p-p pbb pbd pbi pbo pbp pbr pby pdb pdd pdi pdo pdp pdr pib pid pii pio pip pir pob pod poi poo pop por poy ppb ppd ppi ppo ppp ppr prb prd pri pro prp prr pry py- pyb pyd pyo pyr rbb rbd rbi rbo rbp rbr rdb rdd rdi rdo rdp rdr rdy rib rid rii rio rip rir riy rob rod roi roo rop ror roy rpb rpd rpi rpo rpp rpr rrb rrd rri rrp rrr ry- ryd ryo ryr ryy ybi ybp ybr yby ydo ydy yid yii yio yip yir yob yod yoi yoo yop yor yoy ypd ypo yro yrp yyb yyy