ddd dde ddf ddi dds de- ded dee def dei des dfd dfe dff dfi dfs di- did die dif dii dis dsd dse dsf dsi dss ed- edd ede edf edi eds eed eee eef ees ef- efd efe eff efi efs eid eie eif eii eis es- esd ese esf esi ess fdd fde fdf fdi fds fed fee fef fei fes ffd ffe fff ffi ffs fid fie fif fii fis fsd fse fsf fsi fss i-d i-f idd ide idf idi ids ie- ied iee ief iei ies ifd ife iff ifi ifs iid iie iif iii iis is- isd ise isf isi iss sdd sde sdf sdi sds se- sed see sef sei ses sfd sfe sff sfi sfs sid sie sif sii sis ss- ssd sse ssf ssi sss