-er a-a aaa aae aan aap aar aas aea aee aen aep aer aes an- ana ane ann anp anr ans ap- apa ape apn app apr aps ar- ara are arn arp arr ars as- asa ase asn asp asr ass eaa eae ean eap ear eas eea eee een eep eer ees en- ena ene enn enp enr ens ep- epa epe epn epp epr eps era ere ern erp err ers es- esa ese esn esp esr ess naa nae nan nap nar nas ne- nea nee nen nep ner nes nna nne nnn nnp nns npa npe npn npp npr nps nra nre nrn nrp nrr nrs nsa nse nsn nsp nsr nss p-p paa pae pan pap par pas pea pee pen pep per pes pn- pna pne pnn pnp pnr pns ppa ppe ppn ppp ppr pps pra pre prn prp prr prs ps- psa pse psn psp psr pss ra- raa rae ran rap rar ras re- rea ree ren rep rer res rna rnn rnp rnr rns rpa rpe rpn rpp rpr rps rra rrn rrp rrr rrs rsa rse rsn rsp rsr rss saa sae san sap sar sas se- sea see sen sep ser ses sna sne snn snp snr sns spa spe spn spp spr sps sr- sra sre srn srp srr srs ss- ssa sse ssn ssp ssr sss