-er ddd dde ddi ddl ddr de- ded dee dei del der dev di- did die dii dil dir div dl- dld dle dli dll dlr dlv drd dre dri drl drr drv dvd dve dvi dvl dvr ed- edd ede edi edl edr eed eee eel eer eev eid eie eii eil eir eiv eld ele eli ell elr elv erd ere eri erl err erv evd eve evi evl evr evv i-d i-v idd ide idi idl idr idv ie- ied iee iei iel ier iev iid iie iii iil iir il- ild ile ili ill ilr ilv ir- ird ire iri irl irr irv ivd ive ivi ivl ivr ivv ldd lde ldi ldl ldr ldv led lee lei lel ler lev lid lie lii lil lir liv lld lle lli lll llr llv lrd lri lrr lrv lvd lve lvi lvl lvr lvv rdd rde rdi rdl rdr rdv re- red ree rei rel rer rev rid rie rii ril rir riv rld rle rli rll rlr rrd rri rrl rrr rvd rve rvi rvl rvr rvv v-e vdd vde vdi vdl vdr vdv ved vee vei vel ver vi- vid vie vii vil vir viv vl- vld vle vll vlv vrd vre vri vrr vvi vvr vvv