-er eee een eep eer ees eet eie eii ein eip eir eis eit en- ene eni enn enp enr ens ent ep- epe epi epn epp epr eps ept ere eri ern erp err ers ert es- ese esi esn esp esr ess est ete eti etn etp etr ets ett ie- iee iei ien iep ier ies iet iie iii iin iip iir iis iit in- ine ini inn inp inr ins int ipe ipi ipn ipp ipr ips ipt ir- ire iri irn irp irr irs irt is- ise isi isn isp isr iss ist ite iti itn itp its itt n-i ne- nee nei nen nep ner nes net nie nii nin nip nir nis nit nne nni nnn nnp nns nnt npe npi npn npp npr nps npt nre nri nrn nrp nrr nrs nrt nse nsi nsn nsp nsr nss nst nte nti ntn ntp ntr nts ntt p-p pee pei pen pep per pes pet pie pii pin pip pir pis pit pn- pne pni pnn pnp pnr pns pnt ppe ppi ppn ppp ppr pps ppt pre pri prn prp prr prs prt ps- pse psi psn psp psr pss pst pt- pte pti ptn ptp ptr pts ptt re- ree rei ren rep rer res ret rie rii rin rip rir ris rit rni rnn rnp rnr rns rnt rpe rpi rpn rpp rpr rps rpt rri rrn rrp rrr rrs rrt rse rsi rsn rsp rsr rss rst rte rti rtn rtp rtr rts rtt se- see sei sen sep ser ses set sie sii sin sip sir sis sit sne sni snn snp snr sns snt spe spi spn spp spr sps spt sr- sre sri srn srp srr srs srt ss- sse ssi ssn ssp ssr sss sst ste sti stn stp str sts stt te- tee tei ten tep ter tes tet tie tii tin tip tir tis tit tne tni tnn tnp tnr tns tnt tpe tpi tpn tpp tpr tps tpt tre tri trn trp trr trs trt tse tsi tsn tsp tsr tss tst tte tti ttn ttp ttr tts ttt