ddd dde ddi ddl ddp ddx de- ded dee dei del dep dex di- did die dii dil dip dix dl- dld dle dli dll dlp dlx dpd dpe dpi dpl dpp dxd dxi dxl dxp dxx ed- edd ede edi edl edp edx eed eee eel eep eex eid eie eii eil eip eix eld ele eli ell elp elx ep- epd epe epi epl epp epx ex- exd exe exi exl exp exx i-d idd ide idi idl idp idx ie- ied iee iei iel iep iex iid iie iii iil iip iix il- ild ile ili ill ilp ilx ipd ipe ipi ipl ipp ipx ixe ixi ixl l-p ldd lde ldi ldl ldp led lee lei lel lep lex lid lie lii lil lip lix lld lle lli lll llp lpd lpe lpi lpl lpp lpx lxd lxi lxx p-p pdd pde pdi pdl pdp pdx ped pee pei pel pep pex pid pie pii pil pip pix pld ple pli pll plp plx ppd ppe ppi ppl ppp ppx pxe pxl xde xdi xed xee xel xep xex xie xii xix xld xli xpd xpe xpl xpp xxi xxl xxp xxx