Present participle; Past participle - ballooning - ballooned Present - balloon - balloon - balloons - balloon - balloon - balloon Past - ballooned - ballooned - ballooned - ballooned - ballooned - ballooned Future - will balloon - will balloon - will balloon - will balloon - will balloon - will balloon Present conditional - would balloon - would balloon - would balloon - would balloon - would balloon - would balloon Present Perfect - have ballooned - have ballooned - has ballooned - have ballooned - have ballooned - have ballooned Past Perfect - had ballooned - had ballooned - had ballooned - had ballooned - had ballooned - had ballooned Future Perfect - will have ballooned - will have ballooned - will have ballooned - will have ballooned - will have ballooned - will have ballooned Past conditional - would have ballooned - would have ballooned - would have ballooned - would have ballooned - would have ballooned - would have ballooned Imperative - - - balloon - - - - - - - -