Present participle; Past participle - overmastering - overmastered Present - overmaster - overmaster - overmasters - overmaster - overmaster - overmaster Past - overmastered - overmastered - overmastered - overmastered - overmastered - overmastered Future - will overmaster - will overmaster - will overmaster - will overmaster - will overmaster - will overmaster Present conditional - would overmaster - would overmaster - would overmaster - would overmaster - would overmaster - would overmaster Present Perfect - have overmastered - have overmastered - has overmastered - have overmastered - have overmastered - have overmastered Past Perfect - had overmastered - had overmastered - had overmastered - had overmastered - had overmastered - had overmastered Future Perfect - will have overmastered - will have overmastered - will have overmastered - will have overmastered - will have overmastered - will have overmastered Past conditional - would have overmastered - would have overmastered - would have overmastered - would have overmastered - would have overmastered - would have overmastered Imperative - - - overmaster - - - - - - - -