-er bbb bbe bbf bbg bbi bbn bbr be- beb bee bef beg bei ben ber bez bfb bfe bff bfg bfi bfn bfr bfz bgb bge bgf bgg bgi bgn bgr bgz bi- bib bie bif big bii bin bir biz bnb bne bnf bng bni bnn bnr bnz brb bre brf brg bri brn brr brz bze bzf bzn bzr bzz ebb ebe ebf ebg ebi ebn ebr eeb eee eef eeg een eer ef- efb efe eff efg efi efr egb ege egf egg egi egn egr eib eie eif eig eii ein eir en- enb ene enf eng eni enn enr enz erb ere erf erg eri ern err erz eze ezf ezr ezz fbb fbe fbf fbg fbi fbn fbr feb fee fef feg fei fen fer fez ffe fff ffg ffi ffn ffr ffz fgb fge fgf fgg fgi fgn fgr fgz fib fie fif fig fii fin fir fiz fnb fne fnf fng fni fnn fnr fnz frb fre frf frg fri frn frr gbe gbf gbg gbi gbn gbr gbz ge- geb gee gef geg gei gen ger gez gfb gfe gff gfi gfr gfz ggb ggg ggi ggn ggr ggz gib gie gif gig gii gin gir giz gnb gne gnf gni gnn gnr grb gre grf grg gri grn grr gzr i-f ibb ibe ibf ibg ibi ibn ibr ibz ie- iee ief ieg iei ien ier ifb ife iff ifg ifi ifn ifr ifz igb ige igf igg igi ign igr iib iie iif iii iin iir in- inb ine inf ing ini inn inr ir- irb ire irf irg iri irn irr ize izi izz n-i nbb nbe nbf nbg nbi nbn nbr ne- neb nee nef neg nei nen ner nez nfb nfe nff nfi nfn nfr ngb nge ngf ngg ngi ngn nib nie nif nig nii nin nir niz nnb nne nnf nng nni nnn nnz nrb nre nrf nrg nri nrn nrr nrz nzb nze nzf nzg nzi nzz rbb rbe rbf rbg rbi rbn rbr re- reb ree ref reg rei ren rer rez rfb rfe rff rfg rfi rfn rfr rfz rgb rge rgf rgg rgi rgn rgr rib rie rif rig rii rin rir riz rnb rng rni rnn rnr rnz rrb rrf rrg rri rrn rrr rzb rze z-g zbb zbr zeb zee zef zen zer zez zfn zfr zgb zgg zgi zib zie zif zig zin zir ziz zne znn zzr zzz