Present participle; Past participle - contravening - contravened Present - contravene - contravene - contravenes - contravene - contravene - contravene Past - contravened - contravened - contravened - contravened - contravened - contravened Future - will contravene - will contravene - will contravene - will contravene - will contravene - will contravene Present conditional - would contravene - would contravene - would contravene - would contravene - would contravene - would contravene Present Perfect - have contravened - have contravened - has contravened - have contravened - have contravened - have contravened Past Perfect - had contravened - had contravened - had contravened - had contravened - had contravened - had contravened Future Perfect - will have contravened - will have contravened - will have contravened - will have contravened - will have contravened - will have contravened Past conditional - would have contravened - would have contravened - would have contravened - would have contravened - would have contravened - would have contravened Imperative - - - contravene - - - - - - - -