-er -up eee eef een eep eer ees eet ef- efe eff efp efr efs eft en- ene enf enn enp enr ens ent enu ep- epe epf epn epp epr eps ept epu ere erf ern erp err ers ert eru es- ese esf esn esp esr ess est esu ete etf etn etp etr ets ett etu eu- eue euf eun eup eur eus eut fee fef fen fep fer fes fet feu ffe fff ffn ffp ffr ffs fft ffu fne fnf fnn fnp fnr fns fnt fnu fpe fpn fpp fpr fps fpt fpu fre frf frn frp frr frs frt fru fse fsf fsn fsp fsr fss fst fsu fte ftf ftn ftp ftr fts ftt ftu fue fuf fun fup fur fus fut fuu ne- nee nef nen nep ner nes net neu nfe nff nfn nfp nfr nfs nft nfu nne nnf nnn nnp nns nnt nnu npe npf npn npp npr nps npt npu nre nrf nrn nrp nrr nrs nrt nru nse nsf nsn nsp nsr nss nst nsu nte ntf ntn ntp ntr nts ntt ntu nue nun nup nur nus nut nuu p-p pee pef pen pep per pes pet peu pfe pff pfn pfp pfr pfs pft pfu pn- pne pnf pnn pnp pnr pns pnt pnu ppe ppf ppn ppp ppr pps ppt ppu pre prf prn prp prr prs prt pru ps- pse psf psn psp psr pss pst psu pt- pte ptf ptn ptp ptr pts ptt ptu pue puf pun pup pur pus put puu re- ree ref ren rep rer res ret reu rfe rff rfn rfp rfr rfs rft rfu rnn rnp rnr rns rnt rnu rpe rpf rpn rpp rpr rps rpt rpu rrf rrn rrp rrr rrs rrt rru rse rsf rsn rsp rsr rss rst rsu rte rtf rtn rtp rtr rts rtt rtu rue ruf run rup rur rus rut ruu se- see sef sen sep ser ses set seu sfe sff sfn sfp sfr sfs sft sfu sne snf snn snp snr sns snt snu spe spf spn spp spr sps spt spu sr- sre srf srn srp srr srs srt ss- sse ssf ssn ssp ssr sss sst ssu ste stf stn stp str sts stt stu sue suf sun sup sur sus sut suu te- tee tef ten tep ter tes tet teu tfe tff tfn tfp tfr tfs tft tfu tne tnf tnn tnp tnr tns tnt tpe tpf tpn tpp tpr tps tpt tpu tre trf trn trp trr trs trt tru tse tsf tsn tsp tsr tss tst tsu tte ttf ttn ttp ttr tts ttt ttu tue tuf tun tup tur tus tut tuu uee uef uen uep uer ues uet ufe uff ufn ufp ufr ufs uft ufu un- une unf unn unp unr uns unt unu up- upe upf upn upp upr ups upt upu ur- ure urf urn urp urr urs urt uru use usf usn usp usr uss ust usu ute utf utn utp utr uts utt utu uue uun uur uus uut uuu