ddd ddf ddi ddn ddo dfd dff dfi dfn dfo di- did dif dii din dio dnd dnf dni dnn dno dod dof doi don doo fdd fdf fdi fdn fdo ffd fff ffi ffn ffo fid fif fii fin fnd fnf fni fnn fof foi fon foo i-d i-f idd idf idi idn ido ifd iff ifi ifn ifo iid iif iii iin iio in- ind inf ini inn ino io- iod iof ioi ion ioo n-i ndd ndf ndi ndn ndo nfd nff nfi nfn nfo nid nif nii nin nio nnf nni nnn nno no- nod nof noi non noo o-i odd odf odi odn odo of- ofd off ofi ofn ofo oid oif oii oin oio on- ond onf oni onn ono oo- ood oof ooi oon ooo