-ol bbb bbf bbg bbi bbl bbn bbo bfb bff bfg bfi bfl bfn bfo bgb bgf bgg bgi bgl bgn bgo bi- bib bif big bii bil bin bio blb blf blg bli bll bln blo bnb bnf bng bni bnl bnn bno bob bof bog boi bol bon boo fbb fbf fbg fbi fbl fbn fbo fff ffg ffi ffl ffn ffo fgb fgf fgg fgi fgl fgn fib fif fig fii fil fin flb flf flg fli fll fln flo fnb fnf fng fni fnl fnn fob fof fog foi fol fon foo gbf gbg gbi gbl gbn gbo gfb gff gfi gfl gfo ggb ggg ggi ggn ggo gib gif gig gii gil gin gio glb glf glg gli gll gln glo gnb gnf gni gnl gnn gno gob gof gog goi gol gon goo i-f ibb ibf ibg ibi ibl ibn ibo ifb iff ifg ifi ifl ifn ifo igb igf igg igi igl ign igo iib iif iii iil iin iio il- ilb ilf ilg ili ill iln ilo in- inb inf ing ini inl inn ino io- iob iof iog ioi iol ion ioo lbb lbf lbg lbi lbl lbo lfb lff lfg lfi lfl lfn lfo lgb lgf lgg lgi lgl lgn lgo lib lif lig lii lil lin lio llb llf llg lli lll lln llo lnb lng lni lnl lnn lno lob lof log loi lol lon loo n-i nbb nbf nbg nbi nbl nbn nbo nfb nff nfi nfl nfn nfo ngb ngf ngg ngi ngl ngn ngo nib nif nig nii nil nin nio nlb nlf nlg nli nll nln nlo nnb nnf nng nni nnl nnn nno no- nob nof nog noi nol non noo o-i ob- obb obf obg obi obl obn obo of- ofb off ofg ofi ofl ofn ofo ogf ogg ogi ogl ogn ogo oib oif oii oil oin oio olb olf olg oli oll oln olo on- onb onf ong oni onl onn ono oo- oob oof oog ooi ool oon ooo