-er -th bbb bbe bbh bbi bbr bbt be- beb bee beh bei ber bet bhb bhe bhh bhi bhr bht bi- bib bie bih bii bir bit brb bre brh bri brr brt btb bte bth bti btr btt ebb ebe ebh ebi ebr ebt eeb eee eer eet ehb ehe ehh ehi ehr eht eib eie eii eir eit erb ere erh eri err ert etb ete eth eti etr ett h-i hbb hbe hbh hbi hbr hbt he- heb hee heh hei her het hhb hhe hhh hhi hhr hht hib hie hih hii hir hit hr- hrb hre hrh hri hrr hrt htb hte hth hti htr htt ibb ibe ibh ibi ibr ibt ie- iee iei ier iet ihb ihe ihh ihi ihr iht iib iie iih iii iir iit ir- irb ire iri irr irt itb ite ith iti itt rbb rbe rbh rbi rbr rbt re- reb ree reh rei rer ret rh- rhb rhe rhh rhi rhr rht rib rie rih rii rir rit rrb rrh rri rrr rrt rtb rte rti rtr rtt tbb tbe tbh tbi tbr tbt te- teb tee teh tei ter tet th- thb the thh thi thr tht tib tie tih tii tir tit trb tre trh tri trr trt ttb tte tth tti ttr ttt