b-p bbb bbd bbi bbo bbp bbt bdb bdd bdi bdo bdp bdt bi- bib bid bii bio bip bit bob bod boi boo bop bot bpb bpd bpi bpo bpp bpt btb btd bti bto btp btt dbb dbd dbi dbo dbp dbt ddb ddd ddi ddo ddp ddt di- dib did dii dio dip dit dob dod doi doo dop dot dpb dpd dpi dpo dpp dpt dtb dtd dti dto dtp dtt i-d ibb ibd ibi ibo ibp ibt idb idd idi ido idp idt iib iid iii iio iip iit io- iob iod ioi ioo iop iot ipb ipd ipi ipo ipp ipt itb itd iti ito itp itt o-i ob- obb obd obi obo obp obt odb odd odi odo odp odt oib oid oii oio oip oit oo- oob ood ooi ooo oop oot op- opb opd opi opo opp opt ot- otb otd oti oto otp ott p-p pbb pbd pbi pbo pbp pbt pdb pdd pdi pdo pdp pdt pib pid pii pio pip pit pob pod poi poo pop pot ppb ppd ppi ppo ppp ppt pt- ptb ptd pti pto ptp ptt tbb tbd tbi tbo tbp tbt tdb tdd tdi tdo tdp tdt tib tid tii tio tip tit to- tob tod toi too top tot tpb tpd tpi tpo tpp tpt ttb ttd tti tto ttp ttt