Present participle; Past participle - callusing - callused Present - callus - callus - calluses - callus - callus - callus Past - callused - callused - callused - callused - callused - callused Future - will callus - will callus - will callus - will callus - will callus - will callus Present conditional - would callus - would callus - would callus - would callus - would callus - would callus Present Perfect - have callused - have callused - has callused - have callused - have callused - have callused Past Perfect - had callused - had callused - had callused - had callused - had callused - had callused Future Perfect - will have callused - will have callused - will have callused - will have callused - will have callused - will have callused Past conditional - would have callused - would have callused - would have callused - would have callused - would have callused - would have callused Imperative - - - callus - - - - - - - -