ddd ddi ddn ddo ddp dds ddz di- did dii din dio dip dis diz dnd dni dnn dno dnp dns dnz dod doi don doo dop dos doz dpd dpi dpn dpo dpp dps dpz dsd dsi dsn dso dsp dss dsz dzd dzi dzo dzp dzs i-d idd idi idn ido idp ids iid iii iin iio iip iis in- ind ini inn ino inp ins io- iod ioi ion ioo iop ios ipd ipi ipn ipo ipp ips is- isd isi isn iso isp iss izi izo izz n-i ndd ndi ndn ndo ndp nds nid nii nin nio nip nis niz nni nnn nno nnp nns nnz no- nod noi non noo nop nos noz npd npi npn npo npp nps npz nsd nsi nsn nso nsp nss nsz nzd nzi nzo nzp nzs nzz o-i odd odi odn odo odp ods oid oii oin oio oip ois oiz on- ond oni onn ono onp ons oo- ood ooi oon ooo oop oos op- opd opi opn opo opp ops os- osd osi osn oso osp oss ozo ozs ozz p-p pdd pdi pdn pdo pdp pds pdz pid pii pin pio pip pis piz pn- pnd pni pnn pno pnp pns pod poi pon poo pop pos poz ppd ppi ppn ppo ppp pps ppz ps- psd psi psn pso psp pss pzp sdd sdi sdn sdo sdp sds sdz sid sii sin sio sip sis snd sni snn sno snp sns sod soi son soo sop sos soz spd spi spn spo spp sps spz ss- ssd ssi ssn sso ssp sss ssz szd szi szp zds zid zin zio zip zis ziz znd znn zno znp zns zo- zod zoi zon zoo zos zpi zpo zpp zsi zsz zzs zzz