-er ddd dde ddf ddi ddl ddr de- ded dee def dei del der dfd dfe dff dfi dfl dfr di- did die dif dii dil dir dl- dld dle dlf dli dll dlr drd dre dri drl drr ed- edd ede edf edi edl edr eed eee eef eel eer ef- efd efe eff efi efl efr eid eie eif eii eil eir eld ele elf eli ell elr erd ere erf eri erl err fdd fde fdf fdi fdl fdr fed fee fef fei fel fer ffd ffe fff ffi ffl ffr fid fie fif fii fil fir fld fle flf fli fll flr frd fre frf fri frl frr i-d i-f idd ide idf idi idl idr ie- ied iee ief iei iel ier ifd ife iff ifi ifl ifr iid iie iif iii iil iir il- ild ile ilf ili ill ilr ir- ird ire irf iri irl irr ldd lde ldf ldi ldl ldr led lee lef lei lel ler lfd lfe lff lfi lfl lfr lid lie lif lii lil lir lld lle llf lli lll llr lrd lrf lri lrr rdd rde rdf rdi rdl rdr re- red ree ref rei rel rer rfd rfe rff rfi rfl rfr rid rie rif rii ril rir rld rle rlf rli rll rlr rrd rrf rri rrl rrr