
Regular verb: defy - defied - defied
Simple form | V-ing form | 
| I must defy you must defy she must defy we must defy you must defy they must defy  | I must be defying you must be defying she must be defying we must be defying you must be defying they must be defying  | 
Perfect | V-ing perfect | 
| I must have defied you must have defied she must have defied we must have defied you must have defied they must have defied  | I must have been defying you must have been defying she must have been defying we must have been defying you must have been defying they must have been defying  | 
Simple form | V-ing form | 
| I mustn't defy you mustn't defy she mustn't defy we mustn't defy you mustn't defy they mustn't defy  | I mustn't be defying you mustn't be defying she mustn't be defying we mustn't be defying you mustn't be defying they mustn't be defying  | 
Perfect | V-ing perfect | 
| I mustn't have defied you mustn't have defied she mustn't have defied we mustn't have defied you mustn't have defied they mustn't have defied  | I mustn't have been defying you mustn't have been defying she mustn't have been defying we mustn't have been defying you mustn't have been defying they mustn't have been defying  | 
Simple form | V-ing form | 
| must I defy? must you defy? must she defy? must we defy? must you defy? must they defy?  | must I be defying? must you be defying? must she be defying? must we be defying? must you be defying? must they be defying?  | 
Perfect | V-ing perfect | 
| must I have defied? must you have defied? must she have defied? must we have defied? must you have defied? must they have defied?  | must I have been defying? must you have been defying? must she have been defying? must we have been defying? must you have been defying? must they have been defying?  | 
Simple form | V-ing form | 
| mustn't I defy? mustn't you defy? mustn't she defy? mustn't we defy? mustn't you defy? mustn't they defy?  | mustn't I be defying? mustn't you be defying? mustn't she be defying? mustn't we be defying? mustn't you be defying? mustn't they be defying?  | 
Perfect | V-ing perfect | 
| mustn't I have defied? mustn't you have defied? mustn't she have defied? mustn't we have defied? mustn't you have defied? mustn't they have defied?  | mustn't I have been defying? mustn't you have been defying? mustn't she have been defying? mustn't we have been defying? mustn't you have been defying? mustn't they have been defying?  |