-er bbb bbd bbe bbi bbl bbr bdb bdd bde bdi bdl bdr bdv be- beb bed bee bei bel ber bev bi- bib bid bie bii bil bir biv blb bld ble bli bll blr blv brb brd bre bri brl brr brv bvb bvd bve bvi bvl bvr bvv dbb dbd dbe dbi dbl dbr dbv ddb ddd dde ddi ddl ddr de- deb ded dee dei del der dev di- dib did die dii dil dir div dl- dlb dld dle dli dll dlr dlv drb drd dre dri drl drr drv dvb dvd dve dvi dvl dvr ebb ebd ebe ebi ebl ebr ebv ed- edb edd ede edi edl edr eeb eed eee eel eer eev eib eid eie eii eil eir eiv elb eld ele eli ell elr elv erb erd ere eri erl err erv evb evd eve evi evl evr evv i-d i-v ibb ibd ibe ibi ibl ibr ibv idb idd ide idi idl idr idv ie- ied iee iei iel ier iev iib iid iie iii iil iir il- ilb ild ile ili ill ilr ilv ir- irb ird ire iri irl irr irv ivb ivd ive ivi ivl ivr ivv lbb lbd lbe lbi lbl lbr lbv ldb ldd lde ldi ldl ldr ldv leb led lee lei lel ler lev lib lid lie lii lil lir liv llb lld lle lli lll llr llv lrb lrd lri lrr lrv lvb lvd lve lvi lvl lvr lvv rbb rbd rbe rbi rbl rbr rdb rdd rde rdi rdl rdr rdv re- reb red ree rei rel rer rev rib rid rie rii ril rir riv rld rle rli rll rlr rrb rrd rri rrl rrr rvb rvd rve rvi rvl rvr rvv v-e vbd vbi vbl vbr vbv vdb vdd vde vdi vdl vdr vdv veb ved vee vei vel ver vi- vib vid vie vii vil vir viv vl- vlb vld vle vll vlv vrb vrd vre vri vrr vvb vvi vvr vvv