must squinch
Regular verb: squinch - squinched- squinched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must squinch
you must squinch
he must squinch
we must squinch
you must squinch
they must squinch 	I must be squinching
you must be squinching
he must be squinching
we must be squinching
you must be squinching
they must be squinching	I must have squinched
you must have squinched
he must have squinched
we must have squinched
you must have squinched
they must have squinched	I must have been squinching
you must have been squinching
he must have been squinching
we must have been squinching
you must have been squinching
they must have been squinching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't squinch
you mustn't squinch
he mustn't squinch
we mustn't squinch
you mustn't squinch
they mustn't squinch 	I mustn't be squinching
you mustn't be squinching
he mustn't be squinching
we mustn't be squinching
you mustn't be squinching
they mustn't be squinching	I mustn't have squinched
you mustn't have squinched
he mustn't have squinched
we mustn't have squinched
you mustn't have squinched
they mustn't have squinched	I mustn't have been squinching
you mustn't have been squinching
he mustn't have been squinching
we mustn't have been squinching
you mustn't have been squinching
they mustn't have been squinching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I squinch?
must you squinch?
must he squinch?
must we squinch?
must you squinch?
must they squinch? 	must I be squinching?
must you be squinching?
must he be squinching?
must we be squinching?
must you be squinching?
must they be squinching? 	must I have squinched?
must you have squinched?
must he have squinched?
must we have squinched?
must you have squinched?
must they have squinched? 	must I have been squinching?
must you have been squinching?
must he have been squinching?
must we have been squinching?
must you have been squinching?
must they have been squinching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I squinch?
mustn't you squinch?
mustn't he squinch?
mustn't we squinch?
mustn't you squinch?
mustn't they squinch? 	mustn't I be squinching?
mustn't you be squinching?
mustn't he be squinching?
mustn't we be squinching?
mustn't you be squinching?
mustn't they be squinching? 	mustn't I have squinched?
mustn't you have squinched?
mustn't he have squinched?
mustn't we have squinched?
mustn't you have squinched?
mustn't they have squinched? 	mustn't I have been squinching?
mustn't you have been squinching?
mustn't he have been squinching?
mustn't we have been squinching?
mustn't you have been squinching?
mustn't they have been squinching?