-th b-p bbb bbh bbi bbo bbp bbt bhb bhh bhi bho bhp bht bi- bib bih bii bio bip bit bob boh boi boo bop bot bpb bph bpi bpo bpp bpt btb bth bti bto btp btt h-i hbb hbh hbi hbo hbp hbt hhb hhh hhi hho hhp hht hib hih hii hio hip hit hob hoh hoi hoo hop hot hpb hph hpi hpo hpp hpt htb hth hti hto htp htt ibb ibh ibi ibo ibp ibt ihb ihh ihi iho ihp iht iib iih iii iio iip iit io- iob ioh ioi ioo iop iot ipb ipi ipo ipp ipt itb ith iti ito itp itt o-i ob- obb obh obi obo obp obt ohh ohi oho ohp oht oib oii oio oip oit oo- oob ooh ooi ooo oop oot op- opb oph opi opo opp opt ot- otb oth oti oto otp ott p-p pbb pbi pbo pbp pbt phb phi pho php pht pib pih pii pio pip pit pob poh poi poo pop pot ppb pph ppi ppo ppp ppt pt- ptb pth pti pto ptp ptt tbb tbh tbi tbo tbp tbt th- thb thh thi tho thp tht tib tih tii tio tip tit to- tob toh toi too top tot tpb tph tpi tpo tpp tpt ttb tth tti tto ttp ttt