ddd ddi ddn dds ddt di- did dii din dis dit dnd dni dnn dns dnt dsd dsi dsn dss dst dtd dti dtn dts dtt i-d idd idi idn ids idt iid iii iin iis iit in- ind ini inn ins int is- isd isi isn iss ist itd iti itn its itt n-i ndd ndi ndn nds ndt nid nii nin nis nit nni nnn nns nnt nsd nsi nsn nss nst ntd nti ntn nts ntt sdd sdi sdn sds sdt sid sii sin sis sit snd sni snn sns snt ss- ssd ssi ssn sss sst std sti stn sts stt tdd tdi tdn tds tdt tid tii tin tis tit tnd tni tnn tns tnt tsd tsi tsn tss tst ttd tti ttn tts ttt