Present participle; Past participle - narrowing - narrowed Present - narrow - narrow - narrows - narrow - narrow - narrow Past - narrowed - narrowed - narrowed - narrowed - narrowed - narrowed Future - will narrow - will narrow - will narrow - will narrow - will narrow - will narrow Present conditional - would narrow - would narrow - would narrow - would narrow - would narrow - would narrow Present Perfect - have narrowed - have narrowed - has narrowed - have narrowed - have narrowed - have narrowed Past Perfect - had narrowed - had narrowed - had narrowed - had narrowed - had narrowed - had narrowed Future Perfect - will have narrowed - will have narrowed - will have narrowed - will have narrowed - will have narrowed - will have narrowed Past conditional - would have narrowed - would have narrowed - would have narrowed - would have narrowed - would have narrowed - would have narrowed Imperative - - - narrow - - - - - - - -