-er ddd dde ddf ddi ddl ddp ddr de- ded dee def dei del dep der dfd dfe dff dfi dfl dfp dfr di- did die dif dii dil dip dir dl- dld dle dlf dli dll dlp dlr dpd dpe dpf dpi dpl dpp dpr drd dre dri drl drp drr ed- edd ede edf edi edl edp edr eed eee eef eel eep eer ef- efd efe eff efi efl efp efr eid eie eif eii eil eip eir eld ele elf eli ell elp elr ep- epd epe epf epi epl epp epr erd ere erf eri erl erp err fdd fde fdf fdi fdl fdp fdr fed fee fef fei fel fep fer ffd ffe fff ffi ffl ffp ffr fid fie fif fii fil fip fir fld fle flf fli fll flp flr fpd fpe fpi fpl fpp fpr frd fre frf fri frl frp frr i-d i-f idd ide idf idi idl idp idr ie- ied iee ief iei iel iep ier ifd ife iff ifi ifl ifp ifr iid iie iif iii iil iip iir il- ild ile ilf ili ill ilp ilr ipd ipe ipf ipi ipl ipp ipr ir- ird ire irf iri irl irp irr l-p ldd lde ldf ldi ldl ldp ldr led lee lef lei lel lep ler lfd lfe lff lfi lfl lfp lfr lid lie lif lii lil lip lir lld lle llf lli lll llp llr lpd lpe lpf lpi lpl lpp lpr lrd lrf lri lrp lrr p-p pdd pde pdf pdi pdl pdp pdr ped pee pef pei pel pep per pfd pfe pff pfi pfl pfp pfr pid pie pif pii pil pip pir pld ple plf pli pll plp plr ppd ppe ppf ppi ppl ppp ppr prd pre prf pri prl prp prr rdd rde rdf rdi rdl rdp rdr re- red ree ref rei rel rep rer rfd rfe rff rfi rfl rfp rfr rid rie rif rii ril rip rir rld rle rlf rli rll rlp rlr rpd rpe rpf rpi rpl rpp rpr rrd rrf rri rrl rrp rrr