-er ddd dde ddh ddo ddr dds ddu de- ded dee deh deo der des deu dh- dhd dhe dhh dho dhr dhs dhu dod doe doh doo dor dos dou drd dre dro drr drs dru dsd dse dsh dso dsr dss dsu dud due duh duo dur dus ed- edd ede edh edo edr eds edu eed eee eeo eer ees ehd ehe ehh eho ehr ehs ehu eo- eod eoe eoh eoo eor eos eou erd ere erh ero err ers eru es- esd ese esh eso esr ess esu eu- eud eue eur eus hdd hde hdh hdo hdr hds hdu he- hed hee heh heo her hes heu hhd hhe hhh hho hhr hhs hhu hod hoe hoh hoo hor hos hou hr- hrd hre hrh hro hrr hrs hru hsd hse hsh hsr hss hsu hud hue huh huo hur hus huu odd ode odh odo odr ods odu oed oee oeh oeo oer oes ohd ohe ohh oho ohr ohs ohu oo- ood ooh ooo oor oos or- ord ore orh oro orr ors oru os- osd ose osh oso osr oss osu ou- oud oue ouh ouo our ous rdd rde rdh rdo rdr rds rdu re- red ree reh reo rer res reu rh- rhd rhe rhh rho rhr rhs rhu rod roe roh roo ror ros rou rrd rrh rrr rrs rru rsd rse rsh rso rsr rss rsu rud rue ruh ruo rur rus ruu sdd sde sdh sdo sdr sds sdu se- sed see seh seo ser ses seu sh- shd she shh sho shr shs shu sod soe soh soo sor sos sou sr- srd sre srh sro srr srs ss- ssd sse ssh sso ssr sss ssu sud sue suh suo sur sus suu udd ude udo udr uds udu ued uee ueh uer ues uhd uhe uhh uho uhr uhs uhu uod uoe uoo uor uos ur- urd ure uro urr urs uru usd use ush uso usr uss usu uue uur uus uuu