ddd ddf ddi ddk ddt dfd dff dfi dfk dft di- did dif dii dik dit dki dkk dkt dtd dtf dti dtk dtt fdd fdf fdi fdk fdt ffd fff ffi ffk fft fid fif fii fik fit fkf fki fkk fkt ftd ftf fti ftk ftt i-d i-f idd idf idi idk idt ifd iff ifi ift iid iif iii iit ikf iki ikk ikt itd itf iti itk itt k-t kdf kdk kdt kfd kff kfi kid kif kii kik kit kki kkk kkt ktf ktk ktt tdd tdf tdi tdk tdt tfd tff tfi tfk tft tid tif tii tik tit tkk tkt ttd ttf tti ttk ttt