ddd ddi ddk ddn ddo dds di- did dii dik din dio dis dki dkk dko dks dnd dni dnk dnn dno dns dod doi dok don doo dos dsd dsi dsk dsn dso dss i-d idd idi idk idn ido ids iid iii iin iio iis iki ikk iko iks in- ind ini ink inn ino ins io- iod ioi ion ioo ios is- isd isi isk isn iso iss kdk kdo kds kid kii kik kin kio kis kki kkk kkn kks kn- knd kni knk knn kno kod koi kok kon koo kos ksd ksi ksk ksn kso kss n-i ndd ndi ndk ndn ndo nds nid nii nik nin nio nis nki nkk nkn nko nks nni nnk nnn nno nns no- nod noi nok non noo nos nsd nsi nsk nsn nso nss o-i odd odi odn odo ods oid oii oik oin oio ois okd oki okk oko oks on- ond oni onk onn ono ons oo- ood ooi ook oon ooo oos os- osd osi osk osn oso oss sdd sdi sdk sdn sdo sds sid sii sik sin sio sis sk- skd ski skk sko sks snd sni snk snn sno sns sod soi sok son soo sos ss- ssd ssi ssk ssn sso sss