bbb bbf bbi bbn bbo bbr bbt bfb bff bfi bfn bfo bfr bft bi- bib bif bii bin bio bir bit bnb bnf bni bnn bno bnr bnt bob bof boi bon boo bor bot brb brf bri brn bro brr brt btb btf bti btn bto btr btt fbb fbf fbi fbn fbo fbr fbt fff ffi ffn ffo ffr fft fib fif fii fin fir fit fnb fnf fni fnn fnr fnt fob fof foi fon foo for fot frb frf fri frn fro frr frt ftb ftf fti ftn fto ftr ftt i-f ibb ibf ibi ibn ibo ibr ibt ifb iff ifi ifn ifo ifr ift iib iif iii iin iio iir iit in- inb inf ini inn ino inr int io- iob iof ioi ion ioo ior iot ir- irb irf iri irn iro irr irt itb itf iti itn ito itt n-i nbb nbf nbi nbn nbo nbr nbt nfb nff nfi nfn nfo nfr nft nib nif nii nin nio nir nit nnb nnf nni nnn nno nnt no- nob nof noi non noo nor not nrb nrf nri nrn nro nrr nrt ntb ntf nti ntn nto ntr ntt o-i ob- obb obf obi obn obo obr obt of- ofb off ofi ofn ofo ofr oft oib oif oii oin oio oir oit on- onb onf oni onn ono onr ont oo- oob oof ooi oon ooo oor oot or- orb orf ori orn oro orr ort ot- otb otf oti otn oto otr ott rbb rbf rbi rbn rbo rbr rbt rfb rff rfi rfn rfo rfr rft rib rif rii rin rio rir rit rnb rni rnn rno rnr rnt rob rof roi ron roo ror rot rrb rrf rri rrn rrr rrt rtb rtf rti rtn rto rtr rtt tbb tbf tbi tbn tbo tbr tbt tfb tff tfi tfn tfo tfr tft tib tif tii tin tio tir tit tnb tnf tni tnn tno tnr tnt to- tob tof toi ton too tor tot trb trf tri trn tro trr trt ttb ttf tti ttn tto ttr ttt