-er -th eee eeo eep eer eet eex ehe ehh eho ehp ehr eht eo- eoe eoh eoo eop eor eot ep- epe eph epo epp epr ept epx ere erh ero erp err ert ete eth eto etp etr ett etx ex- exe exh exo exp exr ext exx he- hee heh heo hep her het hex hhe hhh hho hhp hhr hht hoe hoh hoo hop hor hot hox hpe hph hpo hpp hpr hpt hr- hre hrh hro hrp hrr hrt hte hth hto htp htr htt htx oee oeh oeo oep oer oet oex ohe ohh oho ohp ohr oht oo- ooh ooo oop oor oot oox op- ope oph opo opp opr opt opx or- ore orh oro orp orr ort orx ot- ote oth oto otp otr ott ox- oxo oxt oxx p-p pee peh peo pep per pet pex phe pho php phr pht phx poe poh poo pop por pot pox ppe pph ppo ppp ppr ppt ppx pre prh pro prp prr prt prx pt- pte pth pto ptp ptr ptt ptx pxe pxr pxt re- ree reh reo rep rer ret rex rh- rhe rhh rho rhp rhr rht roe roh roo rop ror rot rox rpe rph rpo rpp rpr rpt rpx rrh rrp rrr rrt rte rto rtp rtr rtt rtx rxp rxr t-x te- tee teh teo tep ter tet tex th- the thh tho thp thr tht thx to- toe toh too top tor tot tox tpe tph tpo tpp tpr tpt tpx tre trh tro trp trr trt trx tte tth tto ttp ttr ttt ttx txe txt xee xep xer xet xex xhp xht xoo xop xor xot xox xpe xpo xpp xpt xrt xrx xtp xtr xtx xxo xxp xxx