-er eee een eep eer ees eet en- ene enn enp enr ens ent ep- epe epn epp epr eps ept ere ern erp err ers ert es- ese esn esp esr ess est ete etn etp etr ets ett ne- nee nen nep ner nes net nne nnn nnp nns nnt npe npn npp npr nps npt nre nrn nrp nrr nrs nrt nse nsn nsp nsr nss nst nte ntn ntp ntr nts ntt p-p pee pen pep per pes pet pn- pne pnn pnp pnr pns pnt ppe ppn ppp ppr pps ppt pre prn prp prr prs prt ps- pse psn psp psr pss pst pt- pte ptn ptp ptr pts ptt re- ree ren rep rer res ret rnn rnp rnr rns rnt rpe rpn rpp rpr rps rpt rrn rrp rrr rrs rrt rse rsn rsp rsr rss rst rte rtn rtp rtr rts rtt se- see sen sep ser ses set sne snn snp snr sns snt spe spn spp spr sps spt sr- sre srn srp srr srs srt ss- sse ssn ssp ssr sss sst ste stn stp str sts stt te- tee ten tep ter tes tet tne tnn tnp tnr tns tnt tpe tpn tpp tpr tps tpt tre trn trp trr trs trt tse tsn tsp tsr tss tst tte ttn ttp ttr tts ttt