-ol bbb bbg bbl bbn bbo bgb bgg bgl bgn bgo blb blg bll bln blo bnb bng bnl bnn bno bob bog bol bon boo gbg gbl gbn gbo ggb ggg ggn ggo glb glg gll gln glo gnb gnl gnn gno gob gog gol gon goo lbb lbg lbl lbo lgb lgg lgl lgn lgo llb llg lll lln llo lnb lng lnl lnn lno lob log lol lon loo nbb nbg nbl nbn nbo ngb ngg ngl ngn ngo nlb nlg nll nln nlo nnb nng nnl nnn nno no- nob nog nol non noo ob- obb obg obl obn obo ogg ogl ogn ogo olb olg oll oln olo on- onb ong onl onn ono oo- oob oog ool oon ooo