Present participle; Past participle - fluttering - fluttered Present - flutter - flutter - flutters - flutter - flutter - flutter Past - fluttered - fluttered - fluttered - fluttered - fluttered - fluttered Future - will flutter - will flutter - will flutter - will flutter - will flutter - will flutter Present conditional - would flutter - would flutter - would flutter - would flutter - would flutter - would flutter Present Perfect - have fluttered - have fluttered - has fluttered - have fluttered - have fluttered - have fluttered Past Perfect - had fluttered - had fluttered - had fluttered - had fluttered - had fluttered - had fluttered Future Perfect - will have fluttered - will have fluttered - will have fluttered - will have fluttered - will have fluttered - will have fluttered Past conditional - would have fluttered - would have fluttered - would have fluttered - would have fluttered - would have fluttered - would have fluttered Imperative - - - flutter - - - - - - - -