-er eee eef eeg eeo eep eer ees ef- efe eff efg efi efo efp efr efs ege egf egg egi ego egp egr egs eie eif eig eii eio eip eir eis eo- eoe eof eog eoi eoo eop eor eos ep- epe epf epg epi epo epp epr eps ere erf erg eri ero erp err ers es- ese esf esg esi eso esp esr ess fee fef feg fei feo fep fer fes ffe fff ffg ffi ffo ffp ffr ffs fge fgf fgg fgi fgp fgr fgs fie fif fig fii fip fir fis foe fof fog foi foo fop for fos fpe fpg fpi fpo fpp fpr fps fre frf frg fri fro frp frr frs fse fsf fsg fsi fso fsp fsr fss g-p ge- gee gef geg gei geo gep ger ges gfe gff gfi gfo gfp gfr gfs ggg ggi ggo ggp ggr ggs gie gif gig gii gio gip gir gis goe gof gog goi goo gop gor gos gpe gpf gpg gpi gpo gpp gpr gps gre grf grg gri gro grp grr grs gse gsf gsg gsi gso gsp gsr gss i-f ie- iee ief ieg iei iep ier ies ife iff ifg ifi ifo ifp ifr ifs ige igf igg igi igo igp igr igs iie iif iii iio iip iir iis io- ioe iof iog ioi ioo iop ior ios ipe ipf ipg ipi ipo ipp ipr ips ir- ire irf irg iri iro irp irr irs is- ise isf isg isi iso isp isr iss o-i oee oef oeg oei oeo oep oer oes of- ofe off ofg ofi ofo ofp ofr ofs oge ogf ogg ogi ogo ogp ogs oie oif oii oio oip oir ois oo- oof oog ooi ooo oop oor oos op- ope opf opg opi opo opp opr ops or- ore orf org ori oro orp orr ors os- ose osf osg osi oso osp osr oss p-p pee pef peg pei peo pep per pes pfe pff pfg pfi pfo pfp pfr pfs pge pgf pgg pgi pgo pgp pgr pgs pie pif pig pii pio pip pir pis poe pof pog poi poo pop por pos ppe ppf ppg ppi ppo ppp ppr pps pre prf prg pri pro prp prr prs ps- pse psf psg psi pso psp psr pss re- ree ref reg rei reo rep rer res rfe rff rfg rfi rfo rfp rfr rfs rge rgf rgg rgi rgo rgp rgr rgs rie rif rig rii rio rip rir ris roe rof rog roi roo rop ror ros rpe rpf rpg rpi rpo rpp rpr rps rrf rrg rri rrp rrr rrs rse rsf rsg rsi rso rsp rsr rss se- see sef seg sei seo sep ser ses sfe sff sfg sfi sfo sfp sfr sfs sge sgf sgg sgi sgo sgp sgr sgs sie sif sig sii sio sip sir sis soe sof sog soi soo sop sor sos spe spf spg spi spo spp spr sps sr- sre srf srg sri sro srp srr srs ss- sse ssf ssg ssi sso ssp ssr sss