ddd ddi ddr dds ddt ddu ddy di- did dii dir dis dit diu diy drd dri drr drs drt dru dry dsd dsi dsr dss dst dsu dsy dtd dti dtr dts dtt dtu dty dud dui dur dus dut duy dy- dyd dyr dys dyu dyy i-d idd idi idr ids idt idu idy iid iii iir iis iit iiu ir- ird iri irr irs irt iru iry is- isd isi isr iss ist isu isy itd iti its itt itu ity iu- iud iui iur ius iut iyr iys iyt iyy rdd rdi rdr rds rdt rdu rdy rid rii rir ris rit riy rrd rri rrr rrs rrt rru rsd rsi rsr rss rst rsu rtd rti rtr rts rtt rtu rty rud rui rur rus rut ruu ruy ry- ryd ryr rys ryu ryy sdd sdi sdr sds sdt sdu sdy sid sii sir sis sit siu sr- srd sri srr srs srt sry ss- ssd ssi ssr sss sst ssu std sti str sts stt stu sty sud sui sur sus sut suu suy sy- syd syi syr sys syt syu tdd tdi tdr tds tdt tdu tdy tid tii tir tis tit tiu tiy trd tri trr trs trt tru try tsd tsi tsr tss tst tsu tsy ttd tti ttr tts ttt ttu tty tud tui tur tus tut tuu tuy tyd tyr tys tyt udd udi udr uds udt udu uid uii uir uis uit uiu ur- urd uri urr urs urt uru ury usd usi usr uss ust usu utd uti utr uts utt utu uty uur uus uut uuu uyi uys uyu yds ydt ydy yid yii yir yis yit yrs yrt yru ysi ysr yss yst ysu ysy ytd ytr yts ytt ytu yud yui yur yus yut yuu yuy yys yyt yyu yyy