ddd dde ddi ddp ddz de- ded dee dei dep dez di- did die dii dip diz dpd dpe dpi dpp dpz dzd dze dzi dzp ed- edd ede edi edp eed eee eep eid eie eii eip ep- epd epe epi epp epz eze ezz i-d idd ide idi idp ie- ied iee iei iep iid iie iii iip ipd ipe ipi ipp ize izi izz p-p pdd pde pdi pdp pdz ped pee pei pep pez pid pie pii pip piz ppd ppe ppi ppp ppz pzp zed zee zep zez zid zie zip ziz zpe zpi zpp zzz