-er b-u bbb bbe bbf bbi bbr bbt bbu be- beb bee bef bei ber bet beu bfb bfe bff bfi bfr bft bfu bi- bib bie bif bii bir bit biu brb bre brf bri brr brt bru btb bte btf bti btr btt btu bub bue buf bui bur but buu ebb ebe ebf ebi ebr ebt ebu eeb eee eef eer eet ef- efb efe eff efi efr eft eib eie eif eii eir eit eiu erb ere erf eri err ert eru etb ete etf eti etr ett etu eu- eub eue euf eui eur eut fbb fbe fbf fbi fbr fbt fbu feb fee fef fei fer fet feu ffe fff ffi ffr fft ffu fib fie fif fii fir fit fiu frb fre frf fri frr frt fru ftb fte ftf fti ftr ftt ftu fub fue fuf fui fur fut fuu i-f ibb ibe ibf ibi ibr ibt ibu ie- iee ief iei ier iet ifb ife iff ifi ifr ift ifu iib iie iif iii iir iit iiu ir- irb ire irf iri irr irt iru itb ite itf iti itt itu iu- iub iue iui iur iut rbb rbe rbf rbi rbr rbt rbu re- reb ree ref rei rer ret reu rfb rfe rff rfi rfr rft rfu rib rie rif rii rir rit rrb rrf rri rrr rrt rru rtb rte rtf rti rtr rtt rtu rub rue ruf rui rur rut ruu tbb tbe tbf tbi tbr tbt tbu te- teb tee tef tei ter tet teu tfb tfe tff tfi tfr tft tfu tib tie tif tii tir tit tiu trb tre trf tri trr trt tru ttb tte ttf tti ttr ttt ttu tub tue tuf tui tur tut tuu ubb ube ubf ubi ubr ubt ubu ueb uee uef uei uer uet ufe uff ufi ufr uft ufu uib uie uif uii uir uit uiu ur- urb ure urf uri urr urt uru utb ute utf uti utr utt utu uue uur uut uuu