-er eee eef eem eeo eep eer ees ef- efe eff efi efm efo efp efr efs eie eif eii eim eio eip eir eis em- eme emf emi emm emo emp emr ems eo- eoe eof eoi eom eoo eop eor eos ep- epe epf epi epm epo epp epr eps ere erf eri erm ero erp err ers es- ese esf esi esm eso esp esr ess fee fef fei fem feo fep fer fes ffe fff ffi ffm ffo ffp ffr ffs fie fif fii fim fip fir fis fme fmf fmi fmm fmo fmp fmr fms foe fof foi fom foo fop for fos fpe fpi fpm fpo fpp fpr fps fre frf fri frm fro frp frr frs fse fsf fsi fsm fso fsp fsr fss i-f ie- iee ief iei iem iep ier ies ife iff ifi ifm ifo ifp ifr ifs iie iif iii iim iio iip iir iis im- ime imf imi imm imo imp ims io- ioe iof ioi iom ioo iop ior ios ipe ipf ipi ipm ipo ipp ipr ips ir- ire irf iri irm iro irp irr irs is- ise isf isi ism iso isp isr iss m-f m-o m-r mee mef mei mem meo mep mer mes mfe mff mfi mfm mfo mfp mfr mfs mi- mie mif mii mim mio mip mir mis mme mmf mmi mmm mmo mmp mmr mms moe mof moi mom moo mop mor mos mpe mpf mpi mpm mpo mpp mpr mps mre mrf mri mrm mro mrp mrr mrs mse msf msi msm mso msp msr mss o-i oee oef oei oem oeo oep oer oes of- ofe off ofi ofm ofo ofp ofr ofs oie oif oii oim oio oip oir ois om- ome omf omi omm omo omp omr oms oo- oof ooi oom ooo oop oor oos op- ope opf opi opm opo opp opr ops or- ore orf ori orm oro orp orr ors os- ose osf osi osm oso osp osr oss p-p pee pef pei pem peo pep per pes pfe pff pfi pfm pfo pfp pfr pfs pie pif pii pim pio pip pir pis pme pmf pmi pmm pmo pmp pmr pms poe pof poi pom poo pop por pos ppe ppf ppi ppm ppo ppp ppr pps pre prf pri prm pro prp prr prs ps- pse psf psi psm pso psp psr pss re- ree ref rei rem reo rep rer res rfe rff rfi rfm rfo rfp rfr rfs rie rif rii rim rio rip rir ris rme rmf rmi rmm rmo rmp rmr rms roe rof roi rom roo rop ror ros rpe rpf rpi rpm rpo rpp rpr rps rrf rri rrm rrp rrr rrs rse rsf rsi rsm rso rsp rsr rss se- see sef sei sem seo sep ser ses sfe sff sfi sfm sfo sfp sfr sfs sie sif sii sim sio sip sir sis sme smf smi smm smo smp smr sms soe sof soi som soo sop sor sos spe spf spi spm spo spp spr sps sr- sre srf sri srm sro srp srr srs ss- sse ssf ssi ssm sso ssp ssr sss