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 must not pinch
you must not pinch
he must not pinch
we must not pinch
you must not pinch
they must not pinch 	I must not be pinching
you must not be pinching
he must not be pinching
we must not be pinching
you must not be pinching
they must not be pinching	I must not have pinched
you must not have pinched
he must not have pinched
we must not have pinched
you must not have pinched
they must not have pinched	I must not have been pinching
you must not have been pinching
he 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 	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 	
must I not pinch?
must you not pinch?
must he not pinch?
must we not pinch?
must you not pinch?
must they not pinch? 	must I not be pinching?
must you not be pinching?
must he not be pinching?
must we not be pinching?
must you not be pinching?
must they not be pinching? 	must I not have pinched?
must you not have pinched?
must he not have pinched?
must we not have pinched?
must you not have pinched?
must they not have pinched? 	must I not have been pinching?
must you not have been pinching?
must he not have been pinching?
must we not have been pinching?
must you not have been pinching?
must they not have been pinching?