I must pinch you must pinch she must pinch we must pinch you must pinch they must pinch
V-ing form
I must be pinching you must be pinching she must be pinching we must be pinching you must be pinching they must be pinching
Perfect
I must have pinched you must have pinched she must have pinched we must have pinched you must have pinched they must have pinched
V-ing perfect
I must have been pinching you must have been pinching she must have been pinching we must have been pinching you must have been pinching they must have been pinching
Negation
Simple form
I must not pinch you must not pinch she must not pinch we must not pinch you must not pinch they must not pinch
V-ing form
I must not be pinching you must not be pinching she must not be pinching we must not be pinching you must not be pinching they must not be pinching
Perfect
I must not have pinched you must not have pinched she must not have pinched we must not have pinched you must not have pinched they must not have pinched
V-ing perfect
I must not have been pinching you must not have been pinching she must not have been pinching we must not have been pinching you must not have been pinching they must not have been pinching
Interrogative form
Simple form
must I pinch? must you pinch? must she pinch? must we pinch? must you pinch? must they pinch?
V-ing form
must I be pinching? must you be pinching? must she be pinching? must we be pinching? must you be pinching? must they be pinching?
Perfect
must I have pinched? must you have pinched? must she have pinched? must we have pinched? must you have pinched? must they have pinched?
V-ing perfect
must I have been pinching? must you have been pinching? must she have been pinching? must we have been pinching? must you have been pinching? must they have been pinching?
Interro-negative form
Simple form
must I not pinch? must you not pinch? must she not pinch? must we not pinch? must you not pinch? must they not pinch?
V-ing form
must I not be pinching? must you not be pinching? must she not be pinching? must we not be pinching? must you not be pinching? must they not be pinching?
Perfect
must I not have pinched? must you not have pinched? must she not have pinched? must we not have pinched? must you not have pinched? must they not have pinched?
V-ing perfect
must I not have been pinching? must you not have been pinching? must she not have been pinching? must we not have been pinching? must you not have been pinching? must they not have been pinching?