could squall
Regular verb: squall - squalled- squalled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could squall
you could squall
she could squall
we could squall
you could squall
they could squall 	I could be squalling
you could be squalling
she could be squalling
we could be squalling
you could be squalling
they could be squalling	I could have squalled
you could have squalled
she could have squalled
we could have squalled
you could have squalled
they could have squalled	I could have been squalling
you could have been squalling
she could have been squalling
we could have been squalling
you could have been squalling
they could have been squalling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not squall
you could not squall
she could not squall
we could not squall
you could not squall
they could not squall 	I could not be squalling
you could not be squalling
she could not be squalling
we could not be squalling
you could not be squalling
they could not be squalling	I could not have squalled
you could not have squalled
she could not have squalled
we could not have squalled
you could not have squalled
they could not have squalled	I could not have been squalling
you could not have been squalling
she could not have been squalling
we could not have been squalling
you could not have been squalling
they could not have been squalling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I squall?
could you squall?
could she squall?
could we squall?
could you squall?
could they squall? 	could I be squalling?
could you be squalling?
could she be squalling?
could we be squalling?
could you be squalling?
could they be squalling? 	could I have squalled?
could you have squalled?
could she have squalled?
could we have squalled?
could you have squalled?
could they have squalled? 	could I have been squalling?
could you have been squalling?
could she have been squalling?
could we have been squalling?
could you have been squalling?
could they have been squalling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not squall?
could you not squall?
could she not squall?
could we not squall?
could you not squall?
could they not squall? 	could I not be squalling?
could you not be squalling?
could she not be squalling?
could we not be squalling?
could you not be squalling?
could they not be squalling? 	could I not have squalled?
could you not have squalled?
could she not have squalled?
could we not have squalled?
could you not have squalled?
could they not have squalled? 	could I not have been squalling?
could you not have been squalling?
could she not have been squalling?
could we not have been squalling?
could you not have been squalling?
could they not have been squalling?