English verb conjugation
CAN CLUTTER

Regular verb: clutter - cluttered - cluttered

Affirmation

Simple form	V-ing form
I can clutter you can clutter he can clutter we can clutter you can clutter they can clutter	I can be cluttering you can be cluttering he can be cluttering we can be cluttering you can be cluttering they can be cluttering
Perfect	V-ing perfect
I can have cluttered you can have cluttered he can have cluttered we can have cluttered you can have cluttered they can have cluttered	I can have been cluttering you can have been cluttering he can have been cluttering we can have been cluttering you can have been cluttering they can have been cluttering

Negation

Simple form	V-ing form
I can't clutter you can't clutter he can't clutter we can't clutter you can't clutter they can't clutter	I can't be cluttering you can't be cluttering he can't be cluttering we can't be cluttering you can't be cluttering they can't be cluttering
Perfect	V-ing perfect
I can't have cluttered you can't have cluttered he can't have cluttered we can't have cluttered you can't have cluttered they can't have cluttered	I can't have been cluttering you can't have been cluttering he can't have been cluttering we can't have been cluttering you can't have been cluttering they can't have been cluttering

Interrogative form

Simple form	V-ing form
can I clutter? can you clutter? can he clutter? can we clutter? can you clutter? can they clutter?	can I be cluttering? can you be cluttering? can he be cluttering? can we be cluttering? can you be cluttering? can they be cluttering?
Perfect	V-ing perfect
can I have cluttered? can you have cluttered? can he have cluttered? can we have cluttered? can you have cluttered? can they have cluttered?	can I have been cluttering? can you have been cluttering? can he have been cluttering? can we have been cluttering? can you have been cluttering? can they have been cluttering?

Interro-negative form

Simple form	V-ing form
can't I clutter? can't you clutter? can't he clutter? can't we clutter? can't you clutter? can't they clutter?	can't I be cluttering? can't you be cluttering? can't he be cluttering? can't we be cluttering? can't you be cluttering? can't they be cluttering?
Perfect	V-ing perfect
can't I have cluttered? can't you have cluttered? can't he have cluttered? can't we have cluttered? can't you have cluttered? can't they have cluttered?	can't I have been cluttering? can't you have been cluttering? can't he have been cluttering? can't we have been cluttering? can't you have been cluttering? can't they have been cluttering?