Present participle; Past participle - cankering - cankered Present - canker - canker - cankers - canker - canker - canker Past - cankered - cankered - cankered - cankered - cankered - cankered Future - will canker - will canker - will canker - will canker - will canker - will canker Present conditional - would canker - would canker - would canker - would canker - would canker - would canker Present Perfect - have cankered - have cankered - has cankered - have cankered - have cankered - have cankered Past Perfect - had cankered - had cankered - had cankered - had cankered - had cankered - had cankered Future Perfect - will have cankered - will have cankered - will have cankered - will have cankered - will have cankered - will have cankered Past conditional - would have cankered - would have cankered - would have cankered - would have cankered - would have cankered - would have cankered Imperative - - - canker - - - - - - - -