-er -th ddd dde ddh ddn ddp ddr ddt de- ded dee deh den dep der det dh- dhd dhe dhh dhp dhr dht dnd dne dnh dnn dnp dnr dnt dpd dpe dph dpn dpp dpr dpt drd dre drn drp drr drt dtd dte dth dtn dtp dtr dtt ed- edd ede edh edn edp edr edt eed eee een eep eer eet ehd ehe ehh ehn ehp ehr eht en- end ene enh enn enp enr ent ep- epd epe eph epn epp epr ept erd ere erh ern erp err ert etd ete eth etn etp etr ett hdd hde hdh hdn hdp hdr hdt he- hed hee heh hen hep her het hhd hhe hhh hhn hhp hhr hht hnd hne hnh hnn hnt hpd hpe hph hpn hpp hpr hpt hr- hrd hre hrh hrn hrp hrr hrt htd hte hth htn htp htr htt ndd nde ndh ndn ndp ndr ndt ne- ned nee neh nen nep ner net nhd nhe nhh nhn nhp nhr nht nne nnh nnn nnp nnt npd npe nph npn npp npr npt nrd nre nrn nrp nrr nrt ntd nte nth ntn ntp ntr ntt p-p pdd pde pdh pdn pdp pdr pdt ped pee peh pen pep per pet phd phe phn php phr pht pn- pnd pne pnh pnn pnp pnr pnt ppd ppe pph ppn ppp ppr ppt prd pre prh prn prp prr prt pt- ptd pte pth ptn ptp ptr ptt rdd rde rdh rdn rdp rdr rdt re- red ree reh ren rep rer ret rh- rhd rhe rhh rhn rhp rhr rht rnd rnh rnn rnp rnr rnt rpd rpe rph rpn rpp rpr rpt rrd rrh rrn rrp rrr rrt rtd rte rtn rtp rtr rtt tdd tde tdh tdn tdp tdr tdt te- ted tee teh ten tep ter tet th- thd the thh thn thp thr tht tnd tne tnh tnn tnp tnr tnt tpd tpe tph tpn tpp tpr tpt trd tre trh trn trp trr trt ttd tte tth ttn ttp ttr ttt