-er -th ddd dde ddh ddp ddr dds ddt de- ded dee deh dep der des det dh- dhd dhe dhh dhp dhr dhs dht dpd dpe dph dpp dpr dps dpt drd dre drp drr drs drt dsd dse dsh dsp dsr dss dst dtd dte dth dtp dtr dts dtt ed- edd ede edh edp edr eds edt eed eee eep eer ees eet ehd ehe ehh ehp ehr ehs eht ep- epd epe eph epp epr eps ept erd ere erh erp err ers ert es- esd ese esh esp esr ess est etd ete eth etp etr ets ett hdd hde hdh hdp hdr hds hdt he- hed hee heh hep her hes het hhd hhe hhh hhp hhr hhs hht hpd hpe hph hpp hpr hps hpt hr- hrd hre hrh hrp hrr hrs hrt hsd hse hsh hsp hsr hss hst htd hte hth htp htr hts htt p-p pdd pde pdh pdp pdr pds pdt ped pee peh pep per pes pet phd phe php phr phs pht ppd ppe pph ppp ppr pps ppt prd pre prh prp prr prs prt ps- psd pse psh psp psr pss pst pt- ptd pte pth ptp ptr pts ptt rdd rde rdh rdp rdr rds rdt re- red ree reh rep rer res ret rh- rhd rhe rhh rhp rhr rhs rht rpd rpe rph rpp rpr rps rpt rrd rrh rrp rrr rrs rrt rsd rse rsh rsp rsr rss rst rtd rte rtp rtr rts rtt sdd sde sdh sdp sdr sds sdt se- sed see seh sep ser ses set sh- shd she shh shp shr shs sht spd spe sph spp spr sps spt sr- srd sre srh srp srr srs srt ss- ssd sse ssh ssp ssr sss sst std ste sth stp str sts stt tdd tde tdh tdp tdr tds tdt te- ted tee teh tep ter tes tet th- thd the thh thp thr ths tht tpd tpe tph tpp tpr tps tpt trd tre trh trp trr trs trt tsd tse tsh tsp tsr tss tst ttd tte tth ttp ttr tts ttt