ddd ddi ddo ddr dds ddt ddu di- did dii dio dir dis dit diu dod doi doo dor dos dot dou drd dri dro drr drs drt dru dsd dsi dso dsr dss dst dsu dtd dti dto dtr dts dtt dtu dud dui duo dur dus dut i-d idd idi ido idr ids idt idu iid iii iio iir iis iit iiu io- iod ioi ioo ior ios iot iou ir- ird iri iro irr irs irt iru is- isd isi iso isr iss ist isu itd iti ito its itt itu iu- iud iui iur ius iut o-i odd odi odo odr ods odt odu oid oii oio oir ois oit oiu oo- ood ooi ooo oor oos oot or- ord ori oro orr ors ort oru os- osd osi oso osr oss ost osu ot- otd oti oto otr ots ott otu ou- oud oui ouo our ous out rdd rdi rdo rdr rds rdt rdu rid rii rio rir ris rit rod roi roo ror ros rot rou rrd rri rrr rrs rrt rru rsd rsi rso rsr rss rst rsu rtd rti rto rtr rts rtt rtu rud rui ruo rur rus rut ruu sdd sdi sdo sdr sds sdt sdu sid sii sio sir sis sit siu sod soi soo sor sos sot sou sr- srd sri sro srr srs srt ss- ssd ssi sso ssr sss sst ssu std sti sto str sts stt stu sud sui suo sur sus sut suu tdd tdi tdo tdr tds tdt tdu tid tii tio tir tis tit tiu to- tod toi too tor tos tot tou trd tri tro trr trs trt tru tsd tsi tso tsr tss tst tsu ttd tti tto ttr tts ttt ttu tud tui tuo tur tus tut tuu udd udi udo udr uds udt udu uid uii uio uir uis uit uiu uod uoo uor uos uot ur- urd uri uro urr urs urt uru usd usi uso usr uss ust usu utd uti uto utr uts utt utu uur uus uut uuu