b-p bbb bbd bbi bbo bbp bbr bdb bdd bdi bdo bdp bdr bi- bib bid bii bio bip bir bob bod boi boo bop bor bpb bpd bpi bpo bpp bpr brb brd bri bro brp brr dbb dbd dbi dbo dbp dbr ddb ddd ddi ddo ddp ddr di- dib did dii dio dip dir dob dod doi doo dop dor dpb dpd dpi dpo dpp dpr drb drd dri dro drp drr i-d ibb ibd ibi ibo ibp ibr idb idd idi ido idp idr iib iid iii iio iip iir io- iob iod ioi ioo iop ior ipb ipd ipi ipo ipp ipr ir- irb ird iri iro irp irr o-i ob- obb obd obi obo obp obr 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 or- orb ord ori oro orp orr p-p pbb pbd pbi pbo pbp pbr pdb pdd pdi pdo pdp pdr pib pid pii pio pip pir pob pod poi poo pop por ppb ppd ppi ppo ppp ppr prb prd pri pro prp prr rbb rbd rbi rbo rbp rbr rdb rdd rdi rdo rdp rdr rib rid rii rio rip rir rob rod roi roo rop ror rpb rpd rpi rpo rpp rpr rrb rrd rri rrp rrr