Present participle; Past participle - fissuring - fissured Present - fissure - fissure - fissures - fissure - fissure - fissure Past - fissured - fissured - fissured - fissured - fissured - fissured Future - will fissure - will fissure - will fissure - will fissure - will fissure - will fissure Present conditional - would fissure - would fissure - would fissure - would fissure - would fissure - would fissure Present Perfect - have fissured - have fissured - has fissured - have fissured - have fissured - have fissured Past Perfect - had fissured - had fissured - had fissured - had fissured - had fissured - had fissured Future Perfect - will have fissured - will have fissured - will have fissured - will have fissured - will have fissured - will have fissured Past conditional - would have fissured - would have fissured - would have fissured - would have fissured - would have fissured - would have fissured Imperative - - - fissure - - - - - - - -