eee eef een eep ees eet ef- efe eff efi efp efs eft eie eif eii ein eip eis eit en- ene enf eni enn enp ens ent ep- epe epf epi epn epp eps ept es- ese esf esi esn esp ess est ete etf eti etn etp ets ett fee fef fei fen fep fes fet ffe fff ffi ffn ffp ffs fft fie fif fii fin fip fis fit fne fnf fni fnn fnp fns fnt fpe fpi fpn fpp fps fpt fse fsf fsi fsn fsp fss fst fte ftf fti ftn ftp fts ftt i-f ie- iee ief iei ien iep ies iet ife iff ifi ifn ifp ifs ift iie iif iii iin iip iis iit in- ine inf ini inn inp ins int ipe ipf ipi ipn ipp ips ipt is- ise isf isi isn isp iss ist ite itf iti itn itp its itt n-i ne- nee nef nei nen nep nes net nfe nff nfi nfn nfp nfs nft nie nif nii nin nip nis nit nne nnf nni nnn nnp nns nnt npe npf npi npn npp nps npt nse nsf nsi nsn nsp nss nst nte ntf nti ntn ntp nts ntt p-p pee pef pei pen pep pes pet pfe pff pfi pfn pfp pfs pft pie pif pii pin pip pis pit pn- pne pnf pni pnn pnp pns pnt ppe ppf ppi ppn ppp pps ppt ps- pse psf psi psn psp pss pst pt- pte ptf pti ptn ptp pts ptt se- see sef sei sen sep ses set sfe sff sfi sfn sfp sfs sft sie sif sii sin sip sis sit sne snf sni snn snp sns snt spe spf spi spn spp sps spt ss- sse ssf ssi ssn ssp sss sst ste stf sti stn stp sts stt te- tee tef tei ten tep tes tet tfe tff tfi tfn tfp tfs tft tie tif tii tin tip tis tit tne tnf tni tnn tnp tns tnt tpe tpf tpi tpn tpp tps tpt tse tsf tsi tsn tsp tss tst tte ttf tti ttn ttp tts ttt