FWIW `-j` is the plural suffix for all nouns and adjectives in Esperanto (not in accusative where the full generic form followed by an additional `-n`), but I d

FWIW `-j` is the plural suffix for all nouns and adjectives in Esperanto (not in accusative where the full generic form followed by an additional `-n`), but I don't know whether the OP had that in mind or something completely different.