-ol bbb bbf bbg bbi bbl bbn bbo bbt bfb bff bfg bfi bfl bfn bfo bft bgb bgf bgg bgi bgl bgn bgo bgt bi- bib bif big bii bil bin bio bit blb blf blg bli bll bln blo blt bnb bnf bng bni bnl bnn bno bnt bob bof bog boi bol bon boo bot btb btf btg bti btl btn bto btt fbb fbf fbg fbi fbl fbn fbo fbt fff ffg ffi ffl ffn ffo fft fgb fgf fgg fgi fgl fgn fgt fib fif fig fii fil fin fit flb flf flg fli fll fln flo flt fnb fnf fng fni fnl fnn fnt fob fof fog foi fol fon foo fot ftb ftf ftg fti ftl ftn fto ftt gbf gbg gbi gbl gbn gbo gbt gfb gff gfi gfl gfo gft ggb ggg ggi ggn ggo ggt gib gif gig gii gil gin gio git glb glf glg gli gll gln glo glt gnb gnf gni gnl gnn gno gnt gob gof gog goi gol gon goo got gtb gtf gtg gti gtl gtn gto gtt i-f ibb ibf ibg ibi ibl ibn ibo ibt ifb iff ifg ifi ifl ifn ifo ift igb igf igg igi igl ign igo igt iib iif iii iil iin iio iit il- ilb ilf ilg ili ill iln ilo ilt in- inb inf ing ini inl inn ino int io- iob iof iog ioi iol ion ioo iot itb itf itg iti itl itn ito itt lbb lbf lbg lbi lbl lbo lbt lfb lff lfg lfi lfl lfn lfo lft lgb lgf lgg lgi lgl lgn lgo lgt lib lif lig lii lil lin lio lit llb llf llg lli lll lln llo llt lnb lng lni lnl lnn lno lnt lob lof log loi lol lon loo lot ltb ltf ltg lti ltl lto ltt n-i nbb nbf nbg nbi nbl nbn nbo nbt nfb nff nfi nfl nfn nfo nft ngb ngf ngg ngi ngl ngn ngo ngt nib nif nig nii nil nin nio nit nlb nlf nlg nli nll nln nlo nlt nnb nnf nng nni nnl nnn nno nnt no- nob nof nog noi nol non noo not ntb ntf ntg nti ntn nto ntt o-i ob- obb obf obg obi obl obn obo obt of- ofb off ofg ofi ofl ofn ofo oft ogf ogg ogi ogl ogn ogo ogt oib oif oii oil oin oio oit olb olf olg oli oll oln olo olt on- onb onf ong oni onl onn ono ont oo- oob oof oog ooi ool oon ooo oot ot- otb otf otg oti otl otn oto ott tbb tbf tbg tbi tbl tbn tbo tbt tfb tff tfg tfi tfl tfn tfo tft tgb tgf tgg tgi tgl tgn tgo tgt tib tif tig tii til tin tio tit tlf tlg tli tll tln tlo tlt tnb tnf tng tni tnl tnn tno tnt to- tob tof tog toi tol ton too tot ttb ttf ttg tti ttl ttn tto ttt