-er a-a aaa aae aam aan aap aar aea aee aem aen aep aer ama ame amm amn amp amr an- ana ane anm ann anp anr ap- apa ape apm apn app apr ar- ara are arm arn arp arr eaa eae eam ean eap ear eea eee eem een eep eer em- ema eme emm emn emp emr en- ena ene enm enn enp enr ep- epa epe epm epn epp epr era ere erm ern erp err m-r maa mae mam man map mar mea mee mem men mep mer mma mme mmm mmn mmp mmr mna mne mnm mnn mnp mnr mpa mpe mpm mpn mpp mpr mra mre mrm mrn mrp mrr naa nae nam nan nap nar ne- nea nee nem nen nep ner nma nme nmm nmn nmp nmr nna nne nnm nnn nnp npa npe npm npn npp npr nra nre nrm nrn nrp nrr p-p paa pae pam pan pap par pea pee pem pen pep per pma pme pmm pmn pmp pmr pn- pna pne pnm pnn pnp pnr ppa ppe ppm ppn ppp ppr pra pre prm prn prp prr ra- raa rae ram ran rap rar re- rea ree rem ren rep rer rma rme rmm rmn rmp rmr rna rnm rnn rnp rnr rpa rpe rpm rpn rpp rpr rra rrm rrn rrp rrr