can kitten
Regular verb: kitten - kittened- kittened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can kitten
you can kitten
he can kitten
we can kitten
you can kitten
they can kitten 	I can be kittening
you can be kittening
he can be kittening
we can be kittening
you can be kittening
they can be kittening	I can have kittened
you can have kittened
he 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
he 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 can't kitten
you can't kitten
he can't kitten
we can't kitten
you can't kitten
they can't kitten 	I can't be kittening
you can't be kittening
he can't be kittening
we can't be kittening
you can't be kittening
they can't be kittening	I can't have kittened
you can't have kittened
he can't have kittened
we can't have kittened
you can't have kittened
they can't have kittened	I can't have been kittening
you can't have been kittening
he can't have been kittening
we can't have been kittening
you can't have been kittening
they can't have been kittening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I kitten?
can you kitten?
can he kitten?
can we kitten?
can you kitten?
can they kitten? 	can I be kittening?
can you be kittening?
can he be kittening?
can we be kittening?
can you be kittening?
can they be kittening? 	can I have kittened?
can you have kittened?
can he 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 he 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't I kitten?
can't you kitten?
can't he kitten?
can't we kitten?
can't you kitten?
can't they kitten? 	can't I be kittening?
can't you be kittening?
can't he be kittening?
can't we be kittening?
can't you be kittening?
can't they be kittening? 	can't I have kittened?
can't you have kittened?
can't he have kittened?
can't we have kittened?
can't you have kittened?
can't they have kittened? 	can't I have been kittening?
can't you have been kittening?
can't he have been kittening?
can't we have been kittening?
can't you have been kittening?
can't they have been kittening?