-er -th ddd dde ddh ddo ddp ddr ddt ddx de- ded dee deh deo dep der det dex dh- dhd dhe dhh dho dhp dhr dht dod doe doh doo dop dor dot dox dpd dpe dph dpo dpp dpr dpt drd dre dro drp drr drt drx dtd dte dth dto dtp dtr dtt dtx dxd dxo dxp dxr dxt dxx ed- edd ede edh edo edp edr edt edx eed eee eeo eep eer eet eex ehd ehe ehh eho ehp ehr eht eo- eod eoe eoh eoo eop eor eot ep- epd epe eph epo epp epr ept epx erd ere erh ero erp err ert etd ete eth eto etp etr ett etx ex- exd exe exh exo exp exr ext exx hdd hde hdh hdo hdp hdr hdt hdx he- hed hee heh heo hep her het hex hhd hhe hhh hho hhp hhr hht hod hoe hoh hoo hop hor hot hox hpd hpe hph hpo hpp hpr hpt hr- hrd hre hrh hro hrp hrr hrt htd hte hth hto htp htr htt htx hxd odd ode odh odo odp odr odt oed oee oeh oeo oep oer oet oex ohd ohe ohh oho ohp ohr oht oo- ood ooh ooo oop oor oot oox op- opd ope oph opo opp opr opt opx or- ord ore orh oro orp orr ort orx ot- otd ote oth oto otp otr ott ox- oxo oxt oxx p-p pdd pde pdh pdo pdp pdr pdt pdx ped pee peh peo pep per pet pex phd phe pho php phr pht phx pod poe poh poo pop por pot pox ppd ppe pph ppo ppp ppr ppt ppx prd pre prh pro prp prr prt prx pt- ptd pte pth pto ptp ptr ptt ptx pxe pxr pxt rdd rde rdh rdo rdp rdr rdt rdx re- red ree reh reo rep rer ret rex rh- rhd rhe rhh rho rhp rhr rht rod roe roh roo rop ror rot rox rpd rpe rph rpo rpp rpr rpt rpx rrd rrh rrp rrr rrt rtd rte rto rtp rtr rtt rtx rxp rxr t-x tdd tde tdh tdo tdp tdr tdt tdx te- ted tee teh teo tep ter tet tex th- thd the thh tho thp thr tht thx to- tod toe toh too top tor tot tox tpd tpe tph tpo tpp tpr tpt tpx trd tre trh tro trp trr trt trx ttd tte tth tto ttp ttr ttt ttx txe txt xde xdh xdr xdt xed xee xep xer xet xex xhd xhp xht xod xoo xop xor xot xox xpd xpe xpo xpp xpt xrd xrt xrx xtp xtr xtx xxo xxp xxx