bbb bbe bbf bbg bbi bbl be- beb bee bef beg bei bel bfb bfe bff bfg bfi bfl bgb bge bgf bgg bgi bgl bi- bib bie bif big bii bil blb ble blf blg bli bll ebb ebe ebf ebg ebi ebl eeb eee eef eeg eel ef- efb efe eff efg efi efl egb ege egf egg egi egl eib eie eif eig eii eil elb ele elf elg eli ell fbb fbe fbf fbg fbi fbl feb fee fef feg fei fel ffe fff ffg ffi ffl fgb fge fgf fgg fgi fgl fib fie fif fig fii fil flb fle flf flg fli fll gbe gbf gbg gbi gbl ge- geb gee gef geg gei gel gfb gfe gff gfi gfl ggb ggg ggi gib gie gif gig gii gil glb gle glf glg gli gll i-f ibb ibe ibf ibg ibi ibl ie- iee ief ieg iei iel ifb ife iff ifg ifi ifl igb ige igf igg igi igl iib iie iif iii iil il- ilb ile ilf ilg ili ill lbb lbe lbf lbg lbi lbl leb lee lef leg lei lel lfb lfe lff lfg lfi lfl lgb lge lgf lgg lgi lgl lib lie lif lig lii lil llb lle llf llg lli lll