can kitten
Regular verb: kitten - kittened- kittened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can kitten
you can kitten
she can kitten
we can kitten
you can kitten
they can kitten 	I can be kittening
you can be kittening
she can be kittening
we can be kittening
you can be kittening
they can be kittening	I can have kittened
you can have kittened
she can have kittened
we can have kittened
you can have kittened
they can have kittened	I can have been kittening
you can have been kittening
she can have been kittening
we can have been kittening
you can have been kittening
they can have been kittening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot kitten
you cannot kitten
she cannot kitten
we cannot kitten
you cannot kitten
they cannot kitten 	I cannot be kittening
you cannot be kittening
she cannot be kittening
we cannot be kittening
you cannot be kittening
they cannot be kittening	I cannot have kittened
you cannot have kittened
she cannot have kittened
we cannot have kittened
you cannot have kittened
they cannot have kittened	I cannot have been kittening
you cannot have been kittening
she cannot have been kittening
we cannot have been kittening
you cannot have been kittening
they cannot have been kittening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I kitten?
can you kitten?
can she kitten?
can we kitten?
can you kitten?
can they kitten? 	can I be kittening?
can you be kittening?
can she be kittening?
can we be kittening?
can you be kittening?
can they be kittening? 	can I have kittened?
can you have kittened?
can she have kittened?
can we have kittened?
can you have kittened?
can they have kittened? 	can I have been kittening?
can you have been kittening?
can she have been kittening?
can we have been kittening?
can you have been kittening?
can they have been kittening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not kitten?
can you not kitten?
can she not kitten?
can we not kitten?
can you not kitten?
can they not kitten? 	can I not be kittening?
can you not be kittening?
can she not be kittening?
can we not be kittening?
can you not be kittening?
can they not be kittening? 	can I not have kittened?
can you not have kittened?
can she not have kittened?
can we not have kittened?
can you not have kittened?
can they not have kittened? 	can I not have been kittening?
can you not have been kittening?
can she not have been kittening?
can we not have been kittening?
can you not have been kittening?
can they not have been kittening?