bbb bbf bbg bbi bbn bbo bbr bbt bfb bff bfg bfi bfn bfo bfr bft bgb bgf bgg bgi bgn bgo bgr bgt bi- bib bif big bii bin bio bir bit bnb bnf bng bni bnn bno bnr bnt bob bof bog boi bon boo bor bot brb brf brg bri brn bro brr brt btb btf btg bti btn bto btr btt fbb fbf fbg fbi fbn fbo fbr fbt fff ffg ffi ffn ffo ffr fft fgb fgf fgg fgi fgn fgr fgt fib fif fig fii fin fir fit fnb fnf fng fni fnn fnr fnt fob fof fog foi fon foo for fot frb frf frg fri frn fro frr frt ftb ftf ftg fti ftn fto ftr ftt gbf gbg gbi gbn gbo gbr gbt gfb gff gfi gfo gfr gft ggb ggg ggi ggn ggo ggr ggt gib gif gig gii gin gio gir git gnb gnf gni gnn gno gnr gnt gob gof gog goi gon goo gor got grb grf grg gri grn gro grr grt gtb gtf gtg gti gtn gto gtr gtt i-f ibb ibf ibg ibi ibn ibo ibr ibt ifb iff ifg ifi ifn ifo ifr ift igb igf igg igi ign igo igr igt iib iif iii iin iio iir iit in- inb inf ing ini inn ino inr int io- iob iof iog ioi ion ioo ior iot ir- irb irf irg iri irn iro irr irt itb itf itg iti itn ito itt n-i nbb nbf nbg nbi nbn nbo nbr nbt nfb nff nfi nfn nfo nfr nft ngb ngf ngg ngi ngn ngo ngt nib nif nig nii nin nio nir nit nnb nnf nng nni nnn nno nnt no- nob nof nog noi non noo nor not nrb nrf nrg nri nrn nro nrr nrt ntb ntf ntg nti ntn nto ntr ntt o-i ob- obb obf obg obi obn obo obr obt of- ofb off ofg ofi ofn ofo ofr oft ogf ogg ogi ogn ogo ogt oib oif oii oin oio oir oit on- onb onf ong oni onn ono onr ont oo- oob oof oog ooi oon ooo oor oot or- orb orf org ori orn oro orr ort ot- otb otf otg oti otn oto otr ott rbb rbf rbg rbi rbn rbo rbr rbt rfb rff rfg rfi rfn rfo rfr rft rgb rgf rgg rgi rgn rgo rgr rgt rib rif rig rii rin rio rir rit rnb rng rni rnn rno rnr rnt rob rof rog roi ron roo ror rot rrb rrf rrg rri rrn rrr rrt rtb rtf rtg rti rtn rto rtr rtt tbb tbf tbg tbi tbn tbo tbr tbt tfb tff tfg tfi tfn tfo tfr tft tgb tgf tgg tgi tgn tgo tgr tgt tib tif tig tii tin tio tir tit tnb tnf tng tni tnn tno tnr tnt to- tob tof tog toi ton too tor tot trb trf trg tri trn tro trr trt ttb ttf ttg tti ttn tto ttr ttt