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