ddd dde ddf ddi ddk ddl de- ded dee def dei dek del dfd dfe dff dfi dfk dfl di- did die dif dii dik dil dke dki dkk dkl dl- dld dle dlf dli dlk dll ed- edd ede edf edi edk edl eed eee eef eek eel ef- efd efe eff efi efl eid eie eif eii eik eil ekd eke ekf eki ekl eld ele elf eli elk ell fdd fde fdf fdi fdk fdl fed fee fef fei fek fel ffd ffe fff ffi ffk ffl fid fie fif fii fik fil fkf fki fkk fkl fld fle flf fli fll i-d i-f idd ide idf idi idk idl ie- ied iee ief iei iek iel ifd ife iff ifi ifl iid iie iif iii iil ike ikf iki ikk ikl il- ild ile ilf ili ilk ill kde kdf kdk kdl ke- ked kee kef kei kek kel kfd kff kfi kid kie kif kii kik kil kke kki kkk kkl kl- kld klf kli ldd lde ldf ldi ldk ldl led lee lef lei lek lel lfd lfe lff lfi lfk lfl lid lie lif lii lik lil lkl lld lle llf lli llk lll