-er eee eef eem eep eer ees ef- efe eff efi efm efp efr efs eie eif eii eim eip eir eis em- eme emf emi emm emp emr ems ep- epe epf epi epm epp epr eps epz ere erf eri erm erp err ers erz es- ese esf esi esm esp esr ess eze ezf ezr ezs ezz fee fef fei fem fep fer fes fez ffe fff ffi ffm ffp ffr ffs ffz fie fif fii fim fip fir fis fiz fme fmf fmi fmm fmp fmr fms fpe fpi fpm fpp fpr fps fre frf fri frm frp frr frs fse fsf fsi fsm fsp fsr fss i-f ie- iee ief iei iem iep ier ies ife iff ifi ifm ifp ifr ifs ifz iie iif iii iim iip iir iis im- ime imf imi imm imp ims imz ipe ipf ipi ipm ipp ipr ips ir- ire irf iri irm irp irr irs is- ise isf isi ism isp isr iss ize izi izm izz m-f m-r mee mef mei mem mep mer mes mez mfe mff mfi mfm mfp mfr mfs mfz mi- mie mif mii mim mip mir mis miz mme mmf mmi mmm mmp mmr mms mmz mpe mpf mpi mpm mpp mpr mps mre mrf mri mrm mrp mrr mrs mrz mse msf msi msm msp msr mss mzf mzi mzm mzp p-p pee pef pei pem pep per pes pez pfe pff pfi pfm pfp pfr pfs pie pif pii pim pip pir pis piz pme pmf pmi pmm pmp pmr pms pmz ppe ppf ppi ppm ppp ppr pps ppz pre prf pri prm prp prr prs prz ps- pse psf psi psm psp psr pss pzm pzp re- ree ref rei rem rep rer res rez rfe rff rfi rfm rfp rfr rfs rfz rie rif rii rim rip rir ris riz rme rmf rmi rmm rmp rmr rms rpe rpf rpi rpm rpp rpr rps rpz rrf rri rrm rrp rrr rrs rse rsf rsi rsm rsp rsr rss rze rzm se- see sef sei sem sep ser ses sez sfe sff sfi sfm sfp sfr sfs sfz sie sif sii sim sip sir sis sme smf smi smm smp smr sms smz spe spf spi spm spp spr sps spz sr- sre srf sri srm srp srr srs ss- sse ssf ssi ssm ssp ssr sss ssz sze szi szp szr zee zef zem zep zer zes zez zfr zfs zie zif zim zip zir zis ziz zmm zmp zms zpe zpf zpi zpm zpp zpr zrp zrs zse zsi zsm zsz zzr zzs zzz