Present participle; Past participle - grunting - grunted Present - grunt - grunt - grunts - grunt - grunt - grunt Past - grunted - grunted - grunted - grunted - grunted - grunted Future - will grunt - will grunt - will grunt - will grunt - will grunt - will grunt Present conditional - would grunt - would grunt - would grunt - would grunt - would grunt - would grunt Present Perfect - have grunted - have grunted - has grunted - have grunted - have grunted - have grunted Past Perfect - had grunted - had grunted - had grunted - had grunted - had grunted - had grunted Future Perfect - will have grunted - will have grunted - will have grunted - will have grunted - will have grunted - will have grunted Past conditional - would have grunted - would have grunted - would have grunted - would have grunted - would have grunted - would have grunted Imperative - - - grunt - - - - - - - -