ddd ddo ddr dds ddt ddu ddy dod doo dor dos dot dou doy drd dro drr drs drt dru dry dsd dso dsr dss dst dsu dsy dtd dto dtr dts dtt dtu dty dud duo dur dus dut duy dy- dyd dyo dyr dys dyu dyy odd odo odr ods odt odu oo- ood ooo oor oos oot or- ord oro orr ors ort oru ory os- osd oso osr oss ost osu ot- otd oto otr ots ott otu ou- oud ouo our ous out oyd oyo oys rdd rdo rdr rds rdt rdu rdy rod roo ror ros rot rou roy rrd rrr rrs rrt rru rsd rso rsr rss rst rsu rtd rto rtr rts rtt rtu rty rud ruo rur rus rut ruu ruy ry- ryd ryo ryr rys ryu ryy sdd sdo sdr sds sdt sdu sdy sod soo sor sos sot sou soy sr- srd sro srr srs srt sry ss- ssd sso ssr sss sst ssu std sto str sts stt stu sty sud suo sur sus sut suu suy sy- syd syr sys syt syu tdd tdo tdr tds tdt tdu tdy to- tod too tor tos tot tou toy trd tro trr trs trt tru try tsd tso tsr tss tst tsu tsy ttd tto ttr tts ttt ttu tty tud tuo tur tus tut tuu tuy tyd tyo tyr tys tyt udd udo udr uds udt udu uod uoo uor uos uot ur- urd uro urr urs urt uru ury usd uso usr uss ust usu utd uto utr uts utt utu uty uur uus uut uuu uyo uys uyu ydo yds ydt ydy yod yoo yor yos yot you yoy yro yrs yrt yru yso ysr yss yst ysu ysy ytd yto ytr yts ytt ytu yud yuo yur yus yut yuu yuy yys yyt yyu yyy