-er -th ddd dde ddh ddo ddr dds ddt de- ded dee deh deo der des det dh- dhd dhe dhh dho dhr dhs dht dod doe doh doo dor dos dot drd dre dro drr drs drt dsd dse dsh dso dsr dss dst dtd dte dth dto dtr dts dtt ed- edd ede edh edo edr eds edt eed eee eeo eer ees eet ehd ehe ehh eho ehr ehs eht eo- eod eoe eoh eoo eor eos eot erd ere erh ero err ers ert es- esd ese esh eso esr ess est etd ete eth eto etr ets ett hdd hde hdh hdo hdr hds hdt he- hed hee heh heo her hes het hhd hhe hhh hho hhr hhs hht hod hoe hoh hoo hor hos hot hr- hrd hre hrh hro hrr hrs hrt hsd hse hsh hsr hss hst htd hte hth hto htr hts htt odd ode odh odo odr ods odt oed oee oeh oeo oer oes oet ohd ohe ohh oho ohr ohs oht oo- ood ooh ooo oor oos oot or- ord ore orh oro orr ors ort os- osd ose osh oso osr oss ost ot- otd ote oth oto otr ots ott rdd rde rdh rdo rdr rds rdt re- red ree reh reo rer res ret rh- rhd rhe rhh rho rhr rhs rht rod roe roh roo ror ros rot rrd rrh rrr rrs rrt rsd rse rsh rso rsr rss rst rtd rte rto rtr rts rtt sdd sde sdh sdo sdr sds sdt se- sed see seh seo ser ses set sh- shd she shh sho shr shs sht sod soe soh soo sor sos sot sr- srd sre srh sro srr srs srt ss- ssd sse ssh sso ssr sss sst std ste sth sto str sts stt tdd tde tdh tdo tdr tds tdt te- ted tee teh teo ter tes tet th- thd the thh tho thr ths tht to- tod toe toh too tor tos tot trd tre trh tro trr trs trt tsd tse tsh tso tsr tss tst ttd tte tth tto ttr tts ttt