ddd ddi ddn ddr dds di- did dii din dir dis dnd dni dnn dnr dns drd dri drn drr drs dsd dsi dsn dsr dss i-d idd idi idn idr ids iid iii iin iir iis in- ind ini inn inr ins ir- ird iri irn irr irs is- isd isi isn isr iss n-i ndd ndi ndn ndr nds nid nii nin nir nis nni nnn nns nrd nri nrn nrr nrs nsd nsi nsn nsr nss rdd rdi rdn rdr rds rid rii rin rir ris rnd rni rnn rnr rns rrd rri rrn rrr rrs rsd rsi rsn rsr rss sdd sdi sdn sdr sds sid sii sin sir sis snd sni snn snr sns sr- srd sri srn srr srs ss- ssd ssi ssn ssr sss