-er -up eee eef een eep eer ees ef- efe eff efi efp efr efs eie eif eii ein eip eir eis eiu en- ene enf eni enn enp enr ens enu ep- epe epf epi epn epp epr eps epu ere erf eri ern erp err ers eru es- ese esf esi esn esp esr ess esu eu- eue euf eui eun eup eur eus fee fef fei fen fep fer fes feu ffe fff ffi ffn ffp ffr ffs ffu fie fif fii fin fip fir fis fiu fne fnf fni fnn fnp fnr fns fnu fpe fpi fpn fpp fpr fps fpu fre frf fri frn frp frr frs fru fse fsf fsi fsn fsp fsr fss fsu fue fuf fui fun fup fur fus fuu i-f ie- iee ief iei ien iep ier ies ife iff ifi ifn ifp ifr ifs ifu iie iif iii iin iip iir iis iiu in- ine inf ini inn inp inr ins inu ipe ipf ipi ipn ipp ipr ips ipu ir- ire irf iri irn irp irr irs iru is- ise isf isi isn isp isr iss isu iu- iue iui iup iur ius n-i ne- nee nef nei nen nep ner nes neu nfe nff nfi nfn nfp nfr nfs nfu nie nif nii nin nip nir nis niu nne nnf nni nnn nnp nns nnu npe npf npi npn npp npr nps npu nre nrf nri nrn nrp nrr nrs nru nse nsf nsi nsn nsp nsr nss nsu nue nui nun nup nur nus nuu p-p pee pef pei pen pep per pes peu pfe pff pfi pfn pfp pfr pfs pfu pie pif pii pin pip pir pis piu pn- pne pnf pni pnn pnp pnr pns pnu ppe ppf ppi ppn ppp ppr pps ppu pre prf pri prn prp prr prs pru ps- pse psf psi psn psp psr pss psu pue puf pui pun pup pur pus puu re- ree ref rei ren rep rer res reu rfe rff rfi rfn rfp rfr rfs rfu rie rif rii rin rip rir ris rni rnn rnp rnr rns rnu rpe rpf rpi rpn rpp rpr rps rpu rrf rri rrn rrp rrr rrs rru rse rsf rsi rsn rsp rsr rss rsu rue ruf rui run rup rur rus ruu se- see sef sei sen sep ser ses seu sfe sff sfi sfn sfp sfr sfs sfu sie sif sii sin sip sir sis siu sne snf sni snn snp snr sns snu spe spf spi spn spp spr sps spu sr- sre srf sri srn srp srr srs ss- sse ssf ssi ssn ssp ssr sss ssu sue suf sui sun sup sur sus suu uee uef uei uen uep uer ues ufe uff ufi ufn ufp ufr ufs ufu uie uif uii uin uip uir uis uiu un- une unf uni unn unp unr uns unu up- upe upf upi upn upp upr ups upu ur- ure urf uri urn urp urr urs uru use usf usi usn usp usr uss usu uue uun uur uus uuu