-ol -th bbb bbh bbk bbl bbo bbr bbt bhb bhh bhk bhl bho bhr bht bkb bkk bkl bko bkr bkt blb blh blk bll blo blr blt bob boh bok bol boo bor bot brb brh brk brl bro brr brt btb bth btk btl bto btr btt hbb hbh hbk hbl hbo hbr hbt hhb hhh hhk hhl hho hhr hht hkb hkh hkk hkl hko hkr hkt hlb hlh hll hlo hlr hlt hob hoh hok hol hoo hor hot hr- hrb hrh hrk hrl hro hrr hrt htb hth htk htl hto htr htt k-t kbb kbh kbk kbl kbo kbr khh khk kho khr kkb kkh kkk kkl kkr kkt kl- klb klh klo klr klt kob koh kok kol koo kor kot krk krl kro krr krt ktb kth ktk ktl kto ktr ktt lbb lbh lbk lbl lbo lbr lbt lhb lhh lhk lho lhr lht lkb lkh lkl lkr lkt llb llk lll llo llr llt lob loh lok lol loo lor lot lrb lrh lrk lro lrr lrt ltb lth ltk ltl lto ltr ltt ob- obb obh obk obl obo obr obt ohh ohl oho ohr oht okb okk okl oko okr olb olk oll olo olt oo- oob ooh ook ool ooo oor oot or- orb orh ork orl oro orr ort ot- otb oth otk otl oto otr ott rbb rbh rbk rbl rbo rbr rbt rh- rhb rhh rhl rho rhr rht rkb rkk rko rkt rlh rll rlo rlr rlt rob roh rok rol roo ror rot rrb rrh rrk rrl rrr rrt rtb rtk rtl rto rtr rtt tbb tbh tbk tbl tbo tbr tbt th- thb thh thk thl tho thr tht tkb tkk tkl tko tkr tkt tlh tlk tll tlo tlr tlt to- tob toh tok tol too tor tot trb trh trk trl tro trr trt ttb tth ttk ttl tto ttr ttt