bbb bbe bbf bbg bbi bbt be- beb bee bef beg bei bet bfb bfe bff bfg bfi bft bgb bge bgf bgg bgi bgt bi- bib bie bif big bii bit btb bte btf btg bti btt ebb ebe ebf ebg ebi ebt eeb eee eef eeg eet ef- efb efe eff efg efi eft egb ege egf egg egi egt eib eie eif eig eii eit etb ete etf etg eti ett fbb fbe fbf fbg fbi fbt feb fee fef feg fei fet ffe fff ffg ffi fft fgb fge fgf fgg fgi fgt fib fie fif fig fii fit ftb fte ftf ftg fti ftt gbe gbf gbg gbi gbt ge- geb gee gef geg gei get gfb gfe gff gfi gft ggb ggg ggi ggt gib gie gif gig gii git gtb gte gtf gtg gti gtt i-f ibb ibe ibf ibg ibi ibt ie- iee ief ieg iei iet ifb ife iff ifg ifi ift igb ige igf igg igi igt iib iie iif iii iit itb ite itf itg iti itt tbb tbe tbf tbg tbi tbt te- teb tee tef teg tei tet tfb tfe tff tfg tfi tft tgb tge tgf tgg tgi tgt tib tie tif tig tii tit ttb tte ttf ttg tti ttt