bbb bbe bbf bbg bbi bbn be- beb bee bef beg bei ben bfb bfe bff bfg bfi bfn bgb bge bgf bgg bgi bgn bi- bib bie bif big bii bin bnb bne bnf bng bni bnn ebb ebe ebf ebg ebi ebn eeb eee eef eeg een ef- efb efe eff efg efi egb ege egf egg egi egn eib eie eif eig eii ein en- enb ene enf eng eni enn fbb fbe fbf fbg fbi fbn feb fee fef feg fei fen ffe fff ffg ffi ffn fgb fge fgf fgg fgi fgn fib fie fif fig fii fin fnb fne fnf fng fni fnn gbe gbf gbg gbi gbn ge- geb gee gef geg gei gen gfb gfe gff gfi ggb ggg ggi ggn gib gie gif gig gii gin gnb gne gnf gni gnn i-f ibb ibe ibf ibg ibi ibn ie- iee ief ieg iei ien ifb ife iff ifg ifi ifn igb ige igf igg igi ign iib iie iif iii iin in- inb ine inf ing ini inn n-i nbb nbe nbf nbg nbi nbn ne- neb nee nef neg nei nen nfb nfe nff nfi nfn ngb nge ngf ngg ngi ngn nib nie nif nig nii nin nnb nne nnf nng nni nnn