-er -th ddd dde ddh ddn ddo ddp ddr ddt de- ded dee deh den deo dep der det dh- dhd dhe dhh dho dhp dhr dht dnd dne dnh dnn dno dnp dnr dnt dod doe doh don doo dop dor dot dpd dpe dph dpn dpo dpp dpr dpt drd dre drn dro drp drr drt dtd dte dth dtn dto dtp dtr dtt ed- edd ede edh edn edo edp edr edt eed eee een eeo eep eer eet ehd ehe ehh ehn eho ehp ehr eht en- end ene enh enn eno enp enr ent eo- eod eoe eoh eon eoo eop eor eot ep- epd epe eph epn epo epp epr ept erd ere erh ern ero erp err ert etd ete eth etn eto etp etr ett hdd hde hdh hdn hdo hdp hdr hdt he- hed hee heh hen heo hep her het hhd hhe hhh hhn hho hhp hhr hht hnd hne hnh hnn hno hnt hod hoe hoh hon hoo hop hor hot hpd hpe hph hpn hpo hpp hpr hpt hr- hrd hre hrh hrn hro hrp hrr hrt htd hte hth htn hto htp htr htt ndd nde ndh ndn ndo ndp ndr ndt ne- ned nee neh nen neo nep ner net nhd nhe nhh nhn nhp nhr nht nne nnh nnn nno nnp nnt no- nod noe noh non noo nop nor not npd npe nph npn npo npp npr npt nrd nre nrn nro nrp nrr nrt ntd nte nth ntn nto ntp ntr ntt odd ode odh odn odo odp odr odt oed oee oeh oen oeo oep oer oet ohd ohe ohh ohn oho ohp ohr oht on- ond one onh onn ono onp onr ont oo- ood ooh oon ooo oop oor oot op- opd ope oph opn opo opp opr opt or- ord ore orh orn oro orp orr ort ot- otd ote oth otn oto otp otr ott p-p pdd pde pdh pdn pdo pdp pdr pdt ped pee peh pen peo pep per pet phd phe phn pho php phr pht pn- pnd pne pnh pnn pno pnp pnr pnt pod poe poh pon poo pop por pot ppd ppe pph ppn ppo ppp ppr ppt prd pre prh prn pro prp prr prt pt- ptd pte pth ptn pto ptp ptr ptt rdd rde rdh rdn rdo rdp rdr rdt re- red ree reh ren reo rep rer ret rh- rhd rhe rhh rhn rho rhp rhr rht rnd rnh rnn rno rnp rnr rnt rod roe roh ron roo rop ror rot rpd rpe rph rpn rpo rpp rpr rpt rrd rrh rrn rrp rrr rrt rtd rte rtn rto rtp rtr rtt tdd tde tdh tdn tdo tdp tdr tdt te- ted tee teh ten teo tep ter tet th- thd the thh thn tho thp thr tht tnd tne tnh tnn tno tnp tnr tnt to- tod toe toh ton too top tor tot tpd tpe tph tpn tpo tpp tpr tpt trd tre trh trn tro trp trr trt ttd tte tth ttn tto ttp ttr ttt