Present participle; Past participle - believing - believed Present - believe - believe - believes - believe - believe - believe Past - believed - believed - believed - believed - believed - believed Future - will believe - will believe - will believe - will believe - will believe - will believe Present conditional - would believe - would believe - would believe - would believe - would believe - would believe Present Perfect - have believed - have believed - has believed - have believed - have believed - have believed Past Perfect - had believed - had believed - had believed - had believed - had believed - had believed Future Perfect - will have believed - will have believed - will have believed - will have believed - will have believed - will have believed Past conditional - would have believed - would have believed - would have believed - would have believed - would have believed - would have believed Imperative - - - believe - - - - - - - -