Present participle; Past participle - striving - striven Present - strive - strive - strives - strive - strive - strive Past - strove - strove - strove - strove - strove - strove Future - will strive - will strive - will strive - will strive - will strive - will strive Present conditional - would strive - would strive - would strive - would strive - would strive - would strive Present Perfect - have striven - have striven - has striven - have striven - have striven - have striven Past Perfect - had striven - had striven - had striven - had striven - had striven - had striven Future Perfect - will have striven - will have striven - will have striven - will have striven - will have striven - will have striven Past conditional - would have striven - would have striven - would have striven - would have striven - would have striven - would have striven Imperative - - - strive - - - - - - - -