ddd ddi ddo ddr dds ddt di- did dii dio dir dis dit dod doi doo dor dos dot drd dri dro drr drs drt dsd dsi dso dsr dss dst dtd dti dto dtr dts dtt i-d idd idi ido idr ids idt iid iii iio iir iis iit io- iod ioi ioo ior ios iot ir- ird iri iro irr irs irt is- isd isi iso isr iss ist itd iti ito its itt o-i odd odi odo odr ods odt oid oii oio oir ois oit oo- ood ooi ooo oor oos oot or- ord ori oro orr ors ort os- osd osi oso osr oss ost ot- otd oti oto otr ots ott rdd rdi rdo rdr rds rdt rid rii rio rir ris rit rod roi roo ror ros rot rrd rri rrr rrs rrt rsd rsi rso rsr rss rst rtd rti rto rtr rts rtt sdd sdi sdo sdr sds sdt sid sii sio sir sis sit sod soi soo sor sos sot sr- srd sri sro srr srs srt ss- ssd ssi sso ssr sss sst std sti sto str sts stt tdd tdi tdo tdr tds tdt tid tii tio tir tis tit to- tod toi too tor tos tot trd tri tro trr trs trt tsd tsi tso tsr tss tst ttd tti tto ttr tts ttt