b-p bbb bbd bbi bbo bbp bbr bbt bdb bdd bdi bdo bdp bdr bdt bi- bib bid bii bio bip bir bit bob bod boi boo bop bor bot bpb bpd bpi bpo bpp bpr bpt brb brd bri bro brp brr brt btb btd bti bto btp btr btt dbb dbd dbi dbo dbp dbr dbt ddb ddd ddi ddo ddp ddr ddt di- dib did dii dio dip dir dit dob dod doi doo dop dor dot dpb dpd dpi dpo dpp dpr dpt drb drd dri dro drp drr drt dtb dtd dti dto dtp dtr dtt i-d ibb ibd ibi ibo ibp ibr ibt idb idd idi ido idp idr idt iib iid iii iio iip iir iit io- iob iod ioi ioo iop ior iot ipb ipd ipi ipo ipp ipr ipt ir- irb ird iri iro irp irr irt itb itd iti ito itp itt o-i ob- obb obd obi obo obp obr obt odb odd odi odo odp odr odt oib oid oii oio oip oir oit oo- oob ood ooi ooo oop oor oot op- opb opd opi opo opp opr opt or- orb ord ori oro orp orr ort ot- otb otd oti oto otp otr ott p-p pbb pbd pbi pbo pbp pbr pbt pdb pdd pdi pdo pdp pdr pdt pib pid pii pio pip pir pit pob pod poi poo pop por pot ppb ppd ppi ppo ppp ppr ppt prb prd pri pro prp prr prt pt- ptb ptd pti pto ptp ptr ptt rbb rbd rbi rbo rbp rbr rbt rdb rdd rdi rdo rdp rdr rdt rib rid rii rio rip rir rit rob rod roi roo rop ror rot rpb rpd rpi rpo rpp rpr rpt rrb rrd rri rrp rrr rrt rtb rtd rti rto rtp rtr rtt tbb tbd tbi tbo tbp tbr tbt tdb tdd tdi tdo tdp tdr tdt tib tid tii tio tip tir tit to- tob tod toi too top tor tot tpb tpd tpi tpo tpp tpr tpt trb trd tri tro trp trr trt ttb ttd tti tto ttp ttr ttt