could squeal
Regular verb: squeal - squealed- squealed

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

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

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

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