ddd ddf ddi ddk dds dfd dff dfi dfk dfs di- did dif dii dik dis dki dkk dks dsd dsf dsi dsk dss fdd fdf fdi fdk fds ffd fff ffi ffk ffs fid fif fii fik fis fkf fki fkk fsd fsf fsi fsk fss i-d i-f idd idf idi idk ids ifd iff ifi ifs iid iif iii iis ikf iki ikk iks is- isd isf isi isk iss kdf kdk kds kfd kff kfi kfs kid kif kii kik kis kki kkk kks ksd ksf ksi ksk kss sdd sdf sdi sdk sds sfd sff sfi sfk sfs sid sif sii sik sis sk- skd skf ski skk sks ss- ssd ssf ssi ssk sss