bbb bbe bbf bbi bbl bbt be- beb bee bef bei bel bet bfb bfe bff bfi bfl bft bi- bib bie bif bii bil bit blb ble blf bli bll blt btb bte btf bti btl btt ebb ebe ebf ebi ebl ebt eeb eee eef eel eet ef- efb efe eff efi efl eft eib eie eif eii eil eit elb ele elf eli ell elt etb ete etf eti etl ett fbb fbe fbf fbi fbl fbt feb fee fef fei fel fet ffe fff ffi ffl fft fib fie fif fii fil fit flb fle flf fli fll flt ftb fte ftf fti ftl ftt i-f ibb ibe ibf ibi ibl ibt ie- iee ief iei iel iet ifb ife iff ifi ifl ift iib iie iif iii iil iit il- ilb ile ilf ili ill ilt itb ite itf iti itl itt lbb lbe lbf lbi lbl lbt leb lee lef lei lel let lfb lfe lff lfi lfl lft lib lie lif lii lil lit llb lle llf lli lll llt ltb lte ltf lti ltl ltt tbb tbe tbf tbi tbl tbt te- teb tee tef tei tel tet tfb tfe tff tfi tfl tft tib tie tif tii til tit tle tlf tli tll tlt ttb tte ttf tti ttl ttt