could ask
Regular verb: ask - asked- asked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could ask
you could ask
she could ask
we could ask
you could ask
they could ask 	I could be asking
you could be asking
she could be asking
we could be asking
you could be asking
they could be asking	I could have asked
you could have asked
she could have asked
we could have asked
you could have asked
they could have asked	I could have been asking
you could have been asking
she could have been asking
we could have been asking
you could have been asking
they could have been asking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not ask
you could not ask
she could not ask
we could not ask
you could not ask
they could not ask 	I could not be asking
you could not be asking
she could not be asking
we could not be asking
you could not be asking
they could not be asking	I could not have asked
you could not have asked
she could not have asked
we could not have asked
you could not have asked
they could not have asked	I could not have been asking
you could not have been asking
she could not have been asking
we could not have been asking
you could not have been asking
they could not have been asking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I ask?
could you ask?
could she ask?
could we ask?
could you ask?
could they ask? 	could I be asking?
could you be asking?
could she be asking?
could we be asking?
could you be asking?
could they be asking? 	could I have asked?
could you have asked?
could she have asked?
could we have asked?
could you have asked?
could they have asked? 	could I have been asking?
could you have been asking?
could she have been asking?
could we have been asking?
could you have been asking?
could they have been asking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not ask?
could you not ask?
could she not ask?
could we not ask?
could you not ask?
could they not ask? 	could I not be asking?
could you not be asking?
could she not be asking?
could we not be asking?
could you not be asking?
could they not be asking? 	could I not have asked?
could you not have asked?
could she not have asked?
could we not have asked?
could you not have asked?
could they not have asked? 	could I not have been asking?
could you not have been asking?
could she not have been asking?
could we not have been asking?
could you not have been asking?
could they not have been asking?