-er bbb bbd bbe bbi bbl bbr bdb bdd bde bdi bdl bdr be- beb bed bee bei bel ber bi- bib bid bie bii bil bir blb bld ble bli bll blr brb brd bre bri brl brr dbb dbd dbe dbi dbl dbr ddb ddd dde ddi ddl ddr de- deb ded dee dei del der di- dib did die dii dil dir dl- dlb dld dle dli dll dlr drb drd dre dri drl drr ebb ebd ebe ebi ebl ebr ed- edb edd ede edi edl edr eeb eed eee eel eer eib eid eie eii eil eir elb eld ele eli ell elr erb erd ere eri erl err i-d ibb ibd ibe ibi ibl ibr idb idd ide idi idl idr ie- ied iee iei iel ier iib iid iie iii iil iir il- ilb ild ile ili ill ilr ir- irb ird ire iri irl irr lbb lbd lbe lbi lbl lbr ldb ldd lde ldi ldl ldr leb led lee lei lel ler lib lid lie lii lil lir llb lld lle lli lll llr lrb lrd lri lrr rbb rbd rbe rbi rbl rbr rdb rdd rde rdi rdl rdr re- reb red ree rei rel rer rib rid rie rii ril rir rld rle rli rll rlr rrb rrd rri rrl rrr