-er bbb bbe bbh bbi bbr be- beb bee beh bei ber bhb bhe bhh bhi bhr bi- bib bie bih bii bir brb bre brh bri brr ebb ebe ebh ebi ebr eeb eee eer ehb ehe ehh ehi ehr eib eie eii eir erb ere erh eri err h-i hbb hbe hbh hbi hbr he- heb hee heh hei her hhb hhe hhh hhi hhr hib hie hih hii hir hr- hrb hre hrh hri hrr ibb ibe ibh ibi ibr ie- iee iei ier ihb ihe ihh ihi ihr iib iie iih iii iir ir- irb ire iri irr rbb rbe rbh rbi rbr re- reb ree reh rei rer rh- rhb rhe rhh rhi rhr rib rie rih rii rir rrb rrh rri rrr