-er ddd dde ddh ddo ddr dds de- ded dee deh deo der des dh- dhd dhe dhh dho dhr dhs dod doe doh doo dor dos drd dre dro drr drs dsd dse dsh dso dsr dss ed- edd ede edh edo edr eds eed eee eeo eer ees ehd ehe ehh eho ehr ehs eo- eod eoe eoh eoo eor eos erd ere erh ero err ers es- esd ese esh eso esr ess hdd hde hdh hdo hdr hds he- hed hee heh heo her hes hhd hhe hhh hho hhr hhs hod hoe hoh hoo hor hos hr- hrd hre hrh hro hrr hrs hsd hse hsh hsr hss odd ode odh odo odr ods oed oee oeh oeo oer oes ohd ohe ohh oho ohr ohs oo- ood ooh ooo oor oos or- ord ore orh oro orr ors os- osd ose osh oso osr oss rdd rde rdh rdo rdr rds re- red ree reh reo rer res rh- rhd rhe rhh rho rhr rhs rod roe roh roo ror ros rrd rrh rrr rrs rsd rse rsh rso rsr rss sdd sde sdh sdo sdr sds se- sed see seh seo ser ses sh- shd she shh sho shr shs sod soe soh soo sor sos sr- srd sre srh sro srr srs ss- ssd sse ssh sso ssr sss