I must double-declutch you must double-declutch he must double-declutch we must double-declutch you must double-declutch they must double-declutch
V-ing form
I must be double-declutching you must be double-declutching he must be double-declutching we must be double-declutching you must be double-declutching they must be double-declutching
Perfect
I must have double-declutched you must have double-declutched he must have double-declutched we must have double-declutched you must have double-declutched they must have double-declutched
V-ing perfect
I must have been double-declutching you must have been double-declutching he must have been double-declutching we must have been double-declutching you must have been double-declutching they must have been double-declutching
Negation
Simple form
I mustn't double-declutch you mustn't double-declutch he mustn't double-declutch we mustn't double-declutch you mustn't double-declutch they mustn't double-declutch
V-ing form
I mustn't be double-declutching you mustn't be double-declutching he mustn't be double-declutching we mustn't be double-declutching you mustn't be double-declutching they mustn't be double-declutching
Perfect
I mustn't have double-declutched you mustn't have double-declutched he mustn't have double-declutched we mustn't have double-declutched you mustn't have double-declutched they mustn't have double-declutched
V-ing perfect
I mustn't have been double-declutching you mustn't have been double-declutching he mustn't have been double-declutching we mustn't have been double-declutching you mustn't have been double-declutching they mustn't have been double-declutching
Interrogative form
Simple form
must I double-declutch? must you double-declutch? must he double-declutch? must we double-declutch? must you double-declutch? must they double-declutch?
V-ing form
must I be double-declutching? must you be double-declutching? must he be double-declutching? must we be double-declutching? must you be double-declutching? must they be double-declutching?
Perfect
must I have double-declutched? must you have double-declutched? must he have double-declutched? must we have double-declutched? must you have double-declutched? must they have double-declutched?
V-ing perfect
must I have been double-declutching? must you have been double-declutching? must he have been double-declutching? must we have been double-declutching? must you have been double-declutching? must they have been double-declutching?
Interro-negative form
Simple form
mustn't I double-declutch? mustn't you double-declutch? mustn't he double-declutch? mustn't we double-declutch? mustn't you double-declutch? mustn't they double-declutch?
V-ing form
mustn't I be double-declutching? mustn't you be double-declutching? mustn't he be double-declutching? mustn't we be double-declutching? mustn't you be double-declutching? mustn't they be double-declutching?
Perfect
mustn't I have double-declutched? mustn't you have double-declutched? mustn't he have double-declutched? mustn't we have double-declutched? mustn't you have double-declutched? mustn't they have double-declutched?
V-ing perfect
mustn't I have been double-declutching? mustn't you have been double-declutching? mustn't he have been double-declutching? mustn't we have been double-declutching? mustn't you have been double-declutching? mustn't they have been double-declutching?