-er eee eem een eep eer eie eii eim ein eip eir em- eme emi emm emn emp emr en- ene eni enm enn enp enr ep- epe epi epm epn epp epr ere eri erm ern erp err ie- iee iei iem ien iep ier iie iii iim iin iip iir im- ime imi imm imn imp in- ine ini inm inn inp inr ipe ipi ipm ipn ipp ipr ir- ire iri irm irn irp irr m-r mee mei mem men mep mer mi- mie mii mim min mip mir mme mmi mmm mmn mmp mmr mne mni mnm mnn mnp mnr mpe mpi mpm mpn mpp mpr mre mri mrm mrn mrp mrr n-i ne- nee nei nem nen nep ner nie nii nim nin nip nir nme nmi nmm nmn nmp nmr nne nni nnm nnn nnp npe npi npm npn npp npr nre nri nrm nrn nrp nrr p-p pee pei pem pen pep per pie pii pim pin pip pir pme pmi pmm pmn pmp pmr pn- pne pni pnm pnn pnp pnr ppe ppi ppm ppn ppp ppr pre pri prm prn prp prr re- ree rei rem ren rep rer rie rii rim rin rip rir rme rmi rmm rmn rmp rmr rni rnm rnn rnp rnr rpe rpi rpm rpn rpp rpr rri rrm rrn rrp rrr