-er eee eef een eeo eep eer ees ef- efe eff efi efo efp efr efs eie eif eii ein eio eip eir eis en- ene enf eni enn eno enp enr ens eo- eoe eof eoi eon eoo eop eor eos ep- epe epf epi epn epo epp epr eps ere erf eri ern ero erp err ers es- ese esf esi esn eso esp esr ess fee fef fei fen feo fep fer fes ffe fff ffi ffn ffo ffp ffr ffs fie fif fii fin fip fir fis fne fnf fni fnn fnp fnr fns foe fof foi fon foo fop for fos fpe fpi fpn fpo fpp fpr fps fre frf fri frn fro frp frr frs fse fsf fsi fsn fso fsp fsr fss i-f ie- iee ief iei ien iep ier ies ife iff ifi ifn ifo ifp ifr ifs iie iif iii iin iio iip iir iis in- ine inf ini inn ino inp inr ins io- ioe iof ioi ion ioo iop ior ios ipe ipf ipi ipn ipo ipp ipr ips ir- ire irf iri irn iro irp irr irs is- ise isf isi isn iso isp isr iss n-i ne- nee nef nei nen neo nep ner nes nfe nff nfi nfn nfo nfp nfr nfs nie nif nii nin nio nip nir nis nne nnf nni nnn nno nnp nns no- noe nof noi non noo nop nor nos npe npf npi npn npo npp npr nps nre nrf nri nrn nro nrp nrr nrs nse nsf nsi nsn nso nsp nsr nss o-i oee oef oei oen oeo oep oer oes of- ofe off ofi ofn ofo ofp ofr ofs oie oif oii oin oio oip oir ois on- one onf oni onn ono onp onr ons oo- oof ooi oon ooo oop oor oos op- ope opf opi opn opo opp opr ops or- ore orf ori orn oro orp orr ors os- ose osf osi osn oso osp osr oss p-p pee pef pei pen peo pep per pes pfe pff pfi pfn pfo pfp pfr pfs pie pif pii pin pio pip pir pis pn- pne pnf pni pnn pno pnp pnr pns poe pof poi pon poo pop por pos ppe ppf ppi ppn ppo ppp ppr pps pre prf pri prn pro prp prr prs ps- pse psf psi psn pso psp psr pss re- ree ref rei ren reo rep rer res rfe rff rfi rfn rfo rfp rfr rfs rie rif rii rin rio rip rir ris rni rnn rno rnp rnr rns roe rof roi ron roo rop ror ros rpe rpf rpi rpn rpo rpp rpr rps rrf rri rrn rrp rrr rrs rse rsf rsi rsn rso rsp rsr rss se- see sef sei sen seo sep ser ses sfe sff sfi sfn sfo sfp sfr sfs sie sif sii sin sio sip sir sis sne snf sni snn sno snp snr sns soe sof soi son soo sop sor sos spe spf spi spn spo spp spr sps sr- sre srf sri srn sro srp srr srs ss- sse ssf ssi ssn sso ssp ssr sss