could cowl
Regular verb: cowl - cowled- cowled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could cowl
you could cowl
she could cowl
we could cowl
you could cowl
they could cowl 	I could be cowling
you could be cowling
she could be cowling
we could be cowling
you could be cowling
they could be cowling	I could have cowled
you could have cowled
she could have cowled
we could have cowled
you could have cowled
they could have cowled	I could have been cowling
you could have been cowling
she could have been cowling
we could have been cowling
you could have been cowling
they could have been cowling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't cowl
you couldn't cowl
she couldn't cowl
we couldn't cowl
you couldn't cowl
they couldn't cowl 	I couldn't be cowling
you couldn't be cowling
she couldn't be cowling
we couldn't be cowling
you couldn't be cowling
they couldn't be cowling	I couldn't have cowled
you couldn't have cowled
she couldn't have cowled
we couldn't have cowled
you couldn't have cowled
they couldn't have cowled	I couldn't have been cowling
you couldn't have been cowling
she couldn't have been cowling
we couldn't have been cowling
you couldn't have been cowling
they couldn't have been cowling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I cowl?
could you cowl?
could she cowl?
could we cowl?
could you cowl?
could they cowl? 	could I be cowling?
could you be cowling?
could she be cowling?
could we be cowling?
could you be cowling?
could they be cowling? 	could I have cowled?
could you have cowled?
could she have cowled?
could we have cowled?
could you have cowled?
could they have cowled? 	could I have been cowling?
could you have been cowling?
could she have been cowling?
could we have been cowling?
could you have been cowling?
could they have been cowling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I cowl?
couldn't you cowl?
couldn't she cowl?
couldn't we cowl?
couldn't you cowl?
couldn't they cowl? 	couldn't I be cowling?
couldn't you be cowling?
couldn't she be cowling?
couldn't we be cowling?
couldn't you be cowling?
couldn't they be cowling? 	couldn't I have cowled?
couldn't you have cowled?
couldn't she have cowled?
couldn't we have cowled?
couldn't you have cowled?
couldn't they have cowled? 	couldn't I have been cowling?
couldn't you have been cowling?
couldn't she have been cowling?
couldn't we have been cowling?
couldn't you have been cowling?
couldn't they have been cowling?