must pinch
Regular verb: pinch - pinched- pinched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must pinch
you must pinch
she must pinch
we must pinch
you must pinch
they must pinch 	I must be pinching
you must be pinching
she must be pinching
we must be pinching
you must be pinching
they must be pinching	I must have pinched
you must have pinched
she 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
she 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
she 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
she 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
she 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
she 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 she pinch?
must we pinch?
must you pinch?
must they pinch? 	must I be pinching?
must you be pinching?
must she be pinching?
must we be pinching?
must you be pinching?
must they be pinching? 	must I have pinched?
must you have pinched?
must she 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 she 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 she 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 she 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 she 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 she have been pinching?
mustn't we have been pinching?
mustn't you have been pinching?
mustn't they have been pinching?