Arcaicam Esperantom (Kalman Kalocsay & Manuel Halvelik) 1969 Many of the features of Arcaicam Esperantom were inspired by Vulgar Latin. * Articles: There is no definite article in Arcaicam Esperantom, however, there is an indefinite article, unlike in Modern Esperanto. The indefinite article is unn, which also corresponds to the number one. * Endings: * Nouns have six endings in Arcaicam Esperantom: -om/-oym, nominative singular/plural; -on/oyn, accusative singular/plural; -od/oyd, dative singular/plural. Adjectives agree with the endings of the noun, replacing the -o- of the endings with -a-. * The genitive form of a noun is formed by changing -om/-oym to -es/-eys: de domo (of a house) becomes domes (house's). * In adverb form, -e becomes -oe, and -aŭ becomes -ez. *