-er bbb bbe bbg bbi bbn bbr be- beb bee beg bei ben ber bgb bge bgg bgi bgn bgr bi- bib bie big bii bin bir bnb bne bng bni bnn bnr brb bre brg bri brn brr ebb ebe ebg ebi ebn ebr eeb eee eeg een eer egb ege egg egi egn egr eib eie eig eii ein eir en- enb ene eng eni enn enr erb ere erg eri ern err gbe gbg gbi gbn gbr ge- geb gee geg gei gen ger ggb ggg ggi ggn ggr gib gie gig gii gin gir gnb gne gni gnn gnr grb gre grg gri grn grr ibb ibe ibg ibi ibn ibr ie- iee ieg iei ien ier igb ige igg igi ign igr iib iie iii iin iir in- inb ine ing ini inn inr ir- irb ire irg iri irn irr n-i nbb nbe nbg nbi nbn nbr ne- neb nee neg nei nen ner ngb nge ngg ngi ngn nib nie nig nii nin nir nnb nne nng nni nnn nrb nre nrg nri nrn nrr rbb rbe rbg rbi rbn rbr re- reb ree reg rei ren rer rgb rge rgg rgi rgn rgr rib rie rig rii rin rir rnb rng rni rnn rnr rrb rrg rri rrn rrr