-er a-a a-z aaa aae aan aap aar aaz aea aee aen aep aer aez an- ana ane ann anp anr anz ap- apa ape apn app apr ar- ara are arn arp arr arz az- aza aze azn azp azz eaa eae ean eap ear eaz eea eee een eep eer en- ena ene enn enp enr enz ep- epa epe epn epp epr epz era ere ern erp err erz eze ezr ezz naa nae nan nap nar naz ne- nea nee nen nep ner nez nna nne nnn nnp nnz npa npe npn npp npr npz nra nre nrn nrp nrr nrz nze nzp nzz p-p paa pae pan pap par paz pea pee pen pep per pez pn- pna pne pnn pnp pnr ppa ppe ppn ppp ppr ppz pra pre prn prp prr prz pzp ra- raa rae ran rap rar raz re- rea ree ren rep rer rez rna rnn rnp rnr rnz rpa rpe rpn rpp rpr rpz rra rrn rrp rrr rza rze zaa zan zap zar zaz zea zee zen zep zer zez zne znn znp zpe zpp zpr zrp zzr zzz