-th bbb bbh bbi bbo bbt bbx bhb bhh bhi bho bht bhx bi- bib bih bii bio bit bix bob boh boi boo bot box btb bth bti bto btt btx bxb bxi bxo bxx h-i hbb hbh hbi hbo hbt hbx hhb hhh hhi hho hht hib hih hii hio hit hix hob hoh hoi hoo hot hox htb hth hti hto htt htx ibb ibh ibi ibo ibt ibx ihb ihh ihi iho iht iib iih iii iio iit iix io- iob ioh ioi ioo iot itb ith iti ito itt itx ixi o-i ob- obb obh obi obo obt obx ohh ohi oho oht oib oii oio oit oo- oob ooh ooi ooo oot oox ot- otb oth oti oto ott ox- oxb oxi oxo oxt oxx t-x tbb tbh tbi tbo tbt th- thb thh thi tho tht thx tib tih tii tio tit tix to- tob toh toi too tot tox ttb tth tti tto ttt ttx txi txt xbx xht xii xio xit xix xoi xoo xot xox xti xtx xxi xxo xxx