must pinch
Regular verb: pinch - pinched- pinched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must pinch
you must pinch
he must pinch
we must pinch
you must pinch
they must pinch 	I must be pinching
you must be pinching
he must be pinching
we must be pinching
you must be pinching
they must be pinching	I must have pinched
you must have pinched
he must have pinched
we must have pinched
you must have pinched
they must have pinched	I must have been pinching
you must have been pinching
he must have been pinching
we must have been pinching
you must have been pinching
they must have been pinching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't pinch
you mustn't pinch
he mustn't pinch
we mustn't pinch
you mustn't pinch
they mustn't pinch 	I mustn't be pinching
you mustn't be pinching
he mustn't be pinching
we mustn't be pinching
you mustn't be pinching
they mustn't be pinching	I mustn't have pinched
you mustn't have pinched
he mustn't have pinched
we mustn't have pinched
you mustn't have pinched
they mustn't have pinched	I mustn't have been pinching
you mustn't have been pinching
he mustn't have been pinching
we mustn't have been pinching
you mustn't have been pinching
they mustn't have been pinching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I pinch?
must you pinch?
must he pinch?
must we pinch?
must you pinch?
must they pinch? 	must I be pinching?
must you be pinching?
must he be pinching?
must we be pinching?
must you be pinching?
must they be pinching? 	must I have pinched?
must you have pinched?
must he have pinched?
must we have pinched?
must you have pinched?
must they have pinched? 	must I have been pinching?
must you have been pinching?
must he have been pinching?
must we have been pinching?
must you have been pinching?
must they have been pinching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I pinch?
mustn't you pinch?
mustn't he pinch?
mustn't we pinch?
mustn't you pinch?
mustn't they pinch? 	mustn't I be pinching?
mustn't you be pinching?
mustn't he be pinching?
mustn't we be pinching?
mustn't you be pinching?
mustn't they be pinching? 	mustn't I have pinched?
mustn't you have pinched?
mustn't he have pinched?
mustn't we have pinched?
mustn't you have pinched?
mustn't they have pinched? 	mustn't I have been pinching?
mustn't you have been pinching?
mustn't he have been pinching?
mustn't we have been pinching?
mustn't you have been pinching?
mustn't they have been pinching?