-er ddd dde ddh ddr dds ddu de- ded dee deh der des deu dh- dhd dhe dhh dhr dhs dhu drd dre drr drs dru dsd dse dsh dsr dss dsu dud due duh dur dus ed- edd ede edh edr eds edu eed eee eer ees ehd ehe ehh ehr ehs ehu erd ere erh err ers eru es- esd ese esh esr ess esu eu- eud eue eur eus hdd hde hdh hdr hds hdu he- hed hee heh her hes heu hhd hhe hhh hhr hhs hhu hr- hrd hre hrh hrr hrs hru hsd hse hsh hsr hss hsu hud hue huh hur hus huu rdd rde rdh rdr rds rdu re- red ree reh rer res reu rh- rhd rhe rhh rhr rhs rhu rrd rrh rrr rrs rru rsd rse rsh rsr rss rsu rud rue ruh rur rus ruu sdd sde sdh sdr sds sdu se- sed see seh ser ses seu sh- shd she shh shr shs shu sr- srd sre srh srr srs ss- ssd sse ssh ssr sss ssu sud sue suh sur sus suu udd ude udr uds udu ued uee ueh uer ues uhd uhe uhh uhr uhs uhu ur- urd ure urr urs uru usd use ush usr uss usu uue uur uus uuu