Present participle; Past participle - commemorating - commemorated Present - commemorate - commemorate - commemorates - commemorate - commemorate - commemorate Past - commemorated - commemorated - commemorated - commemorated - commemorated - commemorated Future - will commemorate - will commemorate - will commemorate - will commemorate - will commemorate - will commemorate Present conditional - would commemorate - would commemorate - would commemorate - would commemorate - would commemorate - would commemorate Present Perfect - have commemorated - have commemorated - has commemorated - have commemorated - have commemorated - have commemorated Past Perfect - had commemorated - had commemorated - had commemorated - had commemorated - had commemorated - had commemorated Future Perfect - will have commemorated - will have commemorated - will have commemorated - will have commemorated - will have commemorated - will have commemorated Past conditional - would have commemorated - would have commemorated - would have commemorated - would have commemorated - would have commemorated - would have commemorated Imperative - - - commemorate - - - - - - - -