-ol b-u bbb bbl bbn bbo bbt bbu blb bll bln blo blt blu bnb bnl bnn bno bnt bnu bob bol bon boo bot bou btb btl btn bto btt btu bub bul bun buo but buu lbb lbl lbo lbt lbu llb lll lln llo llt llu lnb lnl lnn lno lnt lnu lob lol lon loo lot lou ltb ltl lto ltt ltu lub lul lun luo lut luu nbb nbl nbn nbo nbt nbu nlb nll nln nlo nlt nlu nnb nnl nnn nno nnt nnu no- nob nol non noo not nou ntb ntn nto ntt ntu nub nul nun nuo nut nuu ob- obb obl obn obo obt obu olb oll oln olo olt olu on- onb onl onn ono ont onu oo- oob ool oon ooo oot ot- otb otl otn oto ott otu ou- oul oun ouo out tbb tbl tbn tbo tbt tbu tll tln tlo tlt tlu tnb tnl tnn tno tnt to- tob tol ton too tot tou ttb ttl ttn tto ttt ttu tub tul tun tuo tut tuu ubb ubl ubn ubo ubt ubu ulb ull uln ulo ult ulu un- unb unl unn uno unt unu uob uol uon uoo uot utb utl utn uto utt utu uun uut uuu