-er -th ddd dde ddh ddo ddp ddr ddt de- ded dee deh deo dep der det dh- dhd dhe dhh dho dhp dhr dht dod doe doh doo dop dor dot dpd dpe dph dpo dpp dpr dpt drd dre dro drp drr drt dtd dte dth dto dtp dtr dtt ed- edd ede edh edo edp edr edt eed eee eeo eep eer eet ehd ehe ehh eho ehp ehr eht eo- eod eoe eoh eoo eop eor eot ep- epd epe eph epo epp epr ept erd ere erh ero erp err ert etd ete eth eto etp etr ett hdd hde hdh hdo hdp hdr hdt he- hed hee heh heo hep her het hhd hhe hhh hho hhp hhr hht hod hoe hoh hoo hop hor hot hpd hpe hph hpo hpp hpr hpt hr- hrd hre hrh hro hrp hrr hrt htd hte hth hto htp htr htt odd ode odh odo odp odr odt oed oee oeh oeo oep oer oet ohd ohe ohh oho ohp ohr oht oo- ood ooh ooo oop oor oot op- opd ope oph opo opp opr opt or- ord ore orh oro orp orr ort ot- otd ote oth oto otp otr ott p-p pdd pde pdh pdo pdp pdr pdt ped pee peh peo pep per pet phd phe pho php phr pht pod poe poh poo pop por pot ppd ppe pph ppo ppp ppr ppt prd pre prh pro prp prr prt pt- ptd pte pth pto ptp ptr ptt rdd rde rdh rdo rdp rdr rdt re- red ree reh reo rep rer ret rh- rhd rhe rhh rho rhp rhr rht rod roe roh roo rop ror rot rpd rpe rph rpo rpp rpr rpt rrd rrh rrp rrr rrt rtd rte rto rtp rtr rtt tdd tde tdh tdo tdp tdr tdt te- ted tee teh teo tep ter tet th- thd the thh tho thp thr tht to- tod toe toh too top tor tot tpd tpe tph tpo tpp tpr tpt trd tre trh tro trp trr trt ttd tte tth tto ttp ttr ttt