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