The official Renshuu adjective conjugation schedule only has the formal written conjugation forms (the ありません ones, which I understand are most commonly used in writing and in formal speech) for negative conjugations, but doesn't include the くないです and くなかったです polite spoken forms that are the primary ones in Genki 3rd Ed. In searching these endings in the grammar database, it doesn't look like there's any entries for them that can be added for a custom list.
Would it be possible to add these forms as grammar entries that can then be included in the adjective conjugation schedule?
