Present participle; Past participle - pumping - pumped Present - pump - pump - pumps - pump - pump - pump Past - pumped - pumped - pumped - pumped - pumped - pumped Future - will pump - will pump - will pump - will pump - will pump - will pump Present conditional - would pump - would pump - would pump - would pump - would pump - would pump Present Perfect - have pumped - have pumped - has pumped - have pumped - have pumped - have pumped Past Perfect - had pumped - had pumped - had pumped - had pumped - had pumped - had pumped Future Perfect - will have pumped - will have pumped - will have pumped - will have pumped - will have pumped - will have pumped Past conditional - would have pumped - would have pumped - would have pumped - would have pumped - would have pumped - would have pumped Imperative - - - pump - - - - - - - -