Present participle; Past participle - chairing - chaired Present - chair - chair - chairs - chair - chair - chair Past - chaired - chaired - chaired - chaired - chaired - chaired Future - will chair - will chair - will chair - will chair - will chair - will chair Present conditional - would chair - would chair - would chair - would chair - would chair - would chair Present Perfect - have chaired - have chaired - has chaired - have chaired - have chaired - have chaired Past Perfect - had chaired - had chaired - had chaired - had chaired - had chaired - had chaired Future Perfect - will have chaired - will have chaired - will have chaired - will have chaired - will have chaired - will have chaired Past conditional - would have chaired - would have chaired - would have chaired - would have chaired - would have chaired - would have chaired Imperative - - - chair - - - - - - - -