English verb conjugation
CAN COWL

Regular verb: cowl - cowled - cowled

Affirmation

Simple form	V-ing form
I can cowl you can cowl he can cowl we can cowl you can cowl they can cowl	I can be cowling you can be cowling he can be cowling we can be cowling you can be cowling they can be cowling
Perfect	V-ing perfect
I can have cowled you can have cowled he can have cowled we can have cowled you can have cowled they can have cowled	I can have been cowling you can have been cowling he can have been cowling we can have been cowling you can have been cowling they can have been cowling

Negation

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

Interrogative form

Simple form	V-ing form
can I cowl? can you cowl? can he cowl? can we cowl? can you cowl? can they cowl?	can I be cowling? can you be cowling? can he be cowling? can we be cowling? can you be cowling? can they be cowling?
Perfect	V-ing perfect
can I have cowled? can you have cowled? can he have cowled? can we have cowled? can you have cowled? can they have cowled?	can I have been cowling? can you have been cowling? can he have been cowling? can we have been cowling? can you have been cowling? can they have been cowling?

Interro-negative form

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