-er bbb bbe bbl bbn bbr bbt be- beb bee bel ben ber bet blb ble bll bln blr blt bnb bne bnl bnn bnr bnt brb bre brl brn brr brt btb bte btl btn btr btt ebb ebe ebl ebn ebr ebt eeb eee eel een eer eet elb ele ell eln elr elt en- enb ene enl enn enr ent erb ere erl ern err ert etb ete etl etn etr ett lbb lbe lbl lbr lbt leb lee lel len ler let llb lle lll lln llr llt lnb lne lnl lnn lnr lnt lrb lrn lrr lrt ltb lte ltl ltr ltt nbb nbe nbl nbn nbr nbt ne- neb nee nel nen ner net nlb nle nll nln nlr nlt nnb nne nnl nnn nnt nrb nre nrl nrn nrr nrt ntb nte ntn ntr ntt rbb rbe rbl rbn rbr rbt re- reb ree rel ren rer ret rle rll rln rlr rlt rnb rnn rnr rnt rrb rrl rrn rrr rrt rtb rte rtl rtn rtr rtt tbb tbe tbl tbn tbr tbt te- teb tee tel ten ter tet tle tll tln tlr tlt tnb tne tnl tnn tnr tnt trb tre trl trn trr trt ttb tte ttl ttn ttr ttt