must squeal
Regular verb: squeal - squealed- squealed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must squeal
you must squeal
he must squeal
we must squeal
you must squeal
they must squeal 	I must be squealing
you must be squealing
he must be squealing
we must be squealing
you must be squealing
they must be squealing	I must have squealed
you must have squealed
he must have squealed
we must have squealed
you must have squealed
they must have squealed	I must have been squealing
you must have been squealing
he must have been squealing
we must have been squealing
you must have been squealing
they must have been squealing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't squeal
you mustn't squeal
he mustn't squeal
we mustn't squeal
you mustn't squeal
they mustn't squeal 	I mustn't be squealing
you mustn't be squealing
he mustn't be squealing
we mustn't be squealing
you mustn't be squealing
they mustn't be squealing	I mustn't have squealed
you mustn't have squealed
he mustn't have squealed
we mustn't have squealed
you mustn't have squealed
they mustn't have squealed	I mustn't have been squealing
you mustn't have been squealing
he mustn't have been squealing
we mustn't have been squealing
you mustn't have been squealing
they mustn't have been squealing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I squeal?
must you squeal?
must he squeal?
must we squeal?
must you squeal?
must they squeal? 	must I be squealing?
must you be squealing?
must he be squealing?
must we be squealing?
must you be squealing?
must they be squealing? 	must I have squealed?
must you have squealed?
must he have squealed?
must we have squealed?
must you have squealed?
must they have squealed? 	must I have been squealing?
must you have been squealing?
must he have been squealing?
must we have been squealing?
must you have been squealing?
must they have been squealing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I squeal?
mustn't you squeal?
mustn't he squeal?
mustn't we squeal?
mustn't you squeal?
mustn't they squeal? 	mustn't I be squealing?
mustn't you be squealing?
mustn't he be squealing?
mustn't we be squealing?
mustn't you be squealing?
mustn't they be squealing? 	mustn't I have squealed?
mustn't you have squealed?
mustn't he have squealed?
mustn't we have squealed?
mustn't you have squealed?
mustn't they have squealed? 	mustn't I have been squealing?
mustn't you have been squealing?
mustn't he have been squealing?
mustn't we have been squealing?
mustn't you have been squealing?
mustn't they have been squealing?