Present participle; Past participle - zeroing - zeroed Present - zero - zero - zeroes - zero - zero - zero Past - zeroed - zeroed - zeroed - zeroed - zeroed - zeroed Future - will zero - will zero - will zero - will zero - will zero - will zero Present conditional - would zero - would zero - would zero - would zero - would zero - would zero Present Perfect - have zeroed - have zeroed - has zeroed - have zeroed - have zeroed - have zeroed Past Perfect - had zeroed - had zeroed - had zeroed - had zeroed - had zeroed - had zeroed Future Perfect - will have zeroed - will have zeroed - will have zeroed - will have zeroed - will have zeroed - will have zeroed Past conditional - would have zeroed - would have zeroed - would have zeroed - would have zeroed - would have zeroed - would have zeroed Imperative - - - zero - - - - - - - -