-ol bbb bbe bbf bbi bbl bbo be- beb bee bef bei bel beo bfb bfe bff bfi bfl bfo bi- bib bie bif bii bil bio blb ble blf bli bll blo bob boe bof boi bol boo ebb ebe ebf ebi ebl ebo eeb eee eef eel eeo ef- efb efe eff efi efl efo eib eie eif eii eil eio elb ele elf eli ell elo eo- eob eoe eof eoi eol eoo fbb fbe fbf fbi fbl fbo feb fee fef fei fel feo ffe fff ffi ffl ffo fib fie fif fii fil flb fle flf fli fll flo fob foe fof foi fol foo i-f ibb ibe ibf ibi ibl ibo ie- iee ief iei iel ifb ife iff ifi ifl ifo iib iie iif iii iil iio il- ilb ile ilf ili ill ilo io- iob ioe iof ioi iol ioo lbb lbe lbf lbi lbl lbo leb lee lef lei lel leo lfb lfe lff lfi lfl lfo lib lie lif lii lil lio llb lle llf lli lll llo lob loe lof loi lol loo o-i ob- obb obe obf obi obl obo oeb oee oef oei oel oeo of- ofb ofe off ofi ofl ofo oib oie oif oii oil oio olb ole olf oli oll olo oo- oob oof ooi ool ooo