ddd ddi ddk ddn ddo ddp dds di- did dii dik din dio dip dis dki dkk dko dkp dks dnd dni dnk dnn dno dnp dns dod doi dok don doo dop dos dpd dpi dpk dpn dpo dpp dps dsd dsi dsk dsn dso dsp dss i-d idd idi idk idn ido idp ids iid iii iin iio iip iis iki ikk iko iks in- ind ini ink inn ino inp ins io- iod ioi ion ioo iop ios ipd ipi ipn ipo ipp ips is- isd isi isk isn iso isp iss kdk kdo kdp kds kid kii kik kin kio kip kis kki kkk kkn kkp kks kn- knd kni knk knn kno knp kod koi kok kon koo kop kos kpd kpi kpk kpn kpo kpp kps ksd ksi ksk ksn kso ksp kss n-i ndd ndi ndk ndn ndo ndp nds nid nii nik nin nio nip nis nki nkk nkn nko nkp nks nni nnk nnn nno nnp nns no- nod noi nok non noo nop nos npd npi npn npo npp nps nsd nsi nsk nsn nso nsp nss o-i odd odi odn odo odp ods oid oii oik oin oio oip ois okd oki okk oko okp oks on- ond oni onk onn ono onp ons oo- ood ooi ook oon ooo oop oos op- opd opi opk opn opo opp ops os- osd osi osk osn oso osp oss p-p pdd pdi pdk pdn pdo pdp pds pid pii pik pin pio pip pis pkd pki pkn pko pkp pks pn- pnd pni pnk pnn pno pnp pns pod poi pok pon poo pop pos ppd ppi ppk ppn ppo ppp pps ps- psd psi psk psn pso psp pss sdd sdi sdk sdn sdo sdp sds sid sii sik sin sio sip sis sk- skd ski skk sko skp sks snd sni snk snn sno snp sns sod soi sok son soo sop sos spd spi spk spn spo spp sps ss- ssd ssi ssk ssn sso ssp sss