Present participle; Past participle - undermining - undermined Present - undermine - undermine - undermines - undermine - undermine - undermine Past - undermined - undermined - undermined - undermined - undermined - undermined Future - will undermine - will undermine - will undermine - will undermine - will undermine - will undermine Present conditional - would undermine - would undermine - would undermine - would undermine - would undermine - would undermine Present Perfect - have undermined - have undermined - has undermined - have undermined - have undermined - have undermined Past Perfect - had undermined - had undermined - had undermined - had undermined - had undermined - had undermined Future Perfect - will have undermined - will have undermined - will have undermined - will have undermined - will have undermined - will have undermined Past conditional - would have undermined - would have undermined - would have undermined - would have undermined - would have undermined - would have undermined Imperative - - - undermine - - - - - - - -