English verb conjugation
COULD COWL

Regular verb: cowl - cowled - cowled

Affirmation

Simple form	V-ing form
I could cowl you could cowl he could cowl we could cowl you could cowl they could cowl	I could be cowling you could be cowling he could be cowling we could be cowling you could be cowling they could be cowling
Perfect	V-ing perfect
I could have cowled you could have cowled he 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 he 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
I could not cowl you could not cowl he could not cowl we could not cowl you could not cowl they could not cowl	I could not be cowling you could not be cowling he could not be cowling we could not be cowling you could not be cowling they could not be cowling
Perfect	V-ing perfect
I could not have cowled you could not have cowled he could not have cowled we could not have cowled you could not have cowled they could not have cowled	I could not have been cowling you could not have been cowling he could not have been cowling we could not have been cowling you could not have been cowling they could not have been cowling

Interrogative form

Simple form	V-ing form
could I cowl? could you cowl? could he cowl? could we cowl? could you cowl? could they cowl?	could I be cowling? could you be cowling? could he be cowling? could we be cowling? could you be cowling? could they be cowling?
Perfect	V-ing perfect
could I have cowled? could you have cowled? could he 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 he 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
could I not cowl? could you not cowl? could he not cowl? could we not cowl? could you not cowl? could they not cowl?	could I not be cowling? could you not be cowling? could he not be cowling? could we not be cowling? could you not be cowling? could they not be cowling?
Perfect	V-ing perfect
could I not have cowled? could you not have cowled? could he not have cowled? could we not have cowled? could you not have cowled? could they not have cowled?	could I not have been cowling? could you not have been cowling? could he not have been cowling? could we not have been cowling? could you not have been cowling? could they not have been cowling?