-er bbb bbe bbi bbl bbr bbt be- beb bee bei bel ber bet bi- bib bie bii bil bir bit blb ble bli bll blr blt brb bre bri brl brr brt btb bte bti btl btr btt ebb ebe ebi ebl ebr ebt eeb eee eel eer eet eib eie eii eil eir eit elb ele eli ell elr elt erb ere eri erl err ert etb ete eti etl etr ett ibb ibe ibi ibl ibr ibt ie- iee iei iel ier iet iib iie iii iil iir iit il- ilb ile ili ill ilr ilt ir- irb ire iri irl irr irt itb ite iti itl itt lbb lbe lbi lbl lbr lbt leb lee lei lel ler let lib lie lii lil lir lit llb lle lli lll llr llt lrb lri lrr lrt ltb lte lti ltl ltr ltt rbb rbe rbi rbl rbr rbt re- reb ree rei rel rer ret rib rie rii ril rir rit rle rli rll rlr rlt rrb rri rrl rrr rrt rtb rte rti rtl rtr rtt tbb tbe tbi tbl tbr tbt te- teb tee tei tel ter tet tib tie tii til tir tit tle tli tll tlr tlt trb tre tri trl trr trt ttb tte tti ttl ttr ttt