
Regular verb: administer - administered - administered
Simple form | V-ing form | 
| I must administer you must administer he must administer we must administer you must administer they must administer  | I must be administering you must be administering he must be administering we must be administering you must be administering they must be administering  | 
Perfect | V-ing perfect | 
| I must have administered you must have administered he must have administered we must have administered you must have administered they must have administered  | I must have been administering you must have been administering he must have been administering we must have been administering you must have been administering they must have been administering  | 
Simple form | V-ing form | 
| I mustn't administer you mustn't administer he mustn't administer we mustn't administer you mustn't administer they mustn't administer  | I mustn't be administering you mustn't be administering he mustn't be administering we mustn't be administering you mustn't be administering they mustn't be administering  | 
Perfect | V-ing perfect | 
| I mustn't have administered you mustn't have administered he mustn't have administered we mustn't have administered you mustn't have administered they mustn't have administered  | I mustn't have been administering you mustn't have been administering he mustn't have been administering we mustn't have been administering you mustn't have been administering they mustn't have been administering  | 
Simple form | V-ing form | 
| must I administer? must you administer? must he administer? must we administer? must you administer? must they administer?  | must I be administering? must you be administering? must he be administering? must we be administering? must you be administering? must they be administering?  | 
Perfect | V-ing perfect | 
| must I have administered? must you have administered? must he have administered? must we have administered? must you have administered? must they have administered?  | must I have been administering? must you have been administering? must he have been administering? must we have been administering? must you have been administering? must they have been administering?  | 
Simple form | V-ing form | 
| mustn't I administer? mustn't you administer? mustn't he administer? mustn't we administer? mustn't you administer? mustn't they administer?  | mustn't I be administering? mustn't you be administering? mustn't he be administering? mustn't we be administering? mustn't you be administering? mustn't they be administering?  | 
Perfect | V-ing perfect | 
| mustn't I have administered? mustn't you have administered? mustn't he have administered? mustn't we have administered? mustn't you have administered? mustn't they have administered?  | mustn't I have been administering? mustn't you have been administering? mustn't he have been administering? mustn't we have been administering? mustn't you have been administering? mustn't they have been administering?  |