When the elided consonant was "n", it often nasalized the preceding vowel: cf. Lat. ' ("hand"), ' ("frog"), ' ("good"), Old Portuguese ', ', ' (Portuguese: ', ', '). This process was the source of most of the language's distinctive nasal diphthongs. In particular, the Latin endings "-anem", ' and ' became ' in most cases, cf. Lat. ' ("dog"), ' ("brother"), ' ("reason") with Modern Port. ', ', ', and their plurals "-anes", "-anos", "-ones" normally became "-ães", "-ãos", "-ões", cf. "cães", "irmãos", "razões".