Present participle; Past participle - heiring - heired Present - heir - heir - heirs - heir - heir - heir Past - heired - heired - heired - heired - heired - heired Future - will heir - will heir - will heir - will heir - will heir - will heir Present conditional - would heir - would heir - would heir - would heir - would heir - would heir Present Perfect - have heired - have heired - has heired - have heired - have heired - have heired Past Perfect - had heired - had heired - had heired - had heired - had heired - had heired Future Perfect - will have heired - will have heired - will have heired - will have heired - will have heired - will have heired Past conditional - would have heired - would have heired - would have heired - would have heired - would have heired - would have heired Imperative - - - heir - - - - - - - -