-th bbb bbh bbi bbk bbo bbr bbt bhb bhh bhi bhk bho bhr bht bi- bib bih bii bik bio bir bit bkb bkk bko bkr bkt bob boh boi bok boo bor bot brb brh bri brk bro brr brt btb bth bti btk bto btr btt h-i hbb hbh hbi hbk hbo hbr hbt hhb hhh hhi hhk hho hhr hht hib hih hii hik hio hir hit hkb hkh hki hkk hko hkr hkt hob hoh hoi hok hoo hor hot hr- hrb hrh hri hrk hro hrr hrt htb hth hti htk hto htr htt ibb ibh ibi ibk ibo ibr ibt ihb ihh ihi ihk iho ihr iht iib iih iii iio iir iit ikb iki ikk iko ikr ikt io- iob ioh ioi ioo ior iot ir- irb iri irk iro irr irt itb ith iti itk ito itt k-t kbb kbh kbi kbk kbo kbr khh khi khk kho khr kib kih kii kik kio kir kit kkb kkh kki kkk kkr kkt kob koh koi kok koo kor kot kri krk kro krr krt ktb kth ktk kto ktr ktt o-i ob- obb obh obi obk obo obr obt ohh ohi oho ohr oht oib oii oik oio oir oit okb oki okk oko okr oo- oob ooh ooi ook ooo oor oot or- orb orh ori ork oro orr ort ot- otb oth oti otk oto otr ott rbb rbh rbi rbk rbo rbr rbt rh- rhb rhh rhi rho rhr rht rib rih rii rik rio rir rit rkb rkk rko rkt rob roh roi rok roo ror rot rrb rrh rri rrk rrr rrt rtb rti rtk rto rtr rtt tbb tbh tbi tbk tbo tbr tbt th- thb thh thi thk tho thr tht tib tih tii tik tio tir tit tkb tkk tko tkr tkt to- tob toh toi tok too tor tot trb trh tri trk tro trr trt ttb tth tti ttk tto ttr ttt