English verb conjugation
CAN SHUTTER

Regular verb: shutter - shuttered - shuttered

Affirmation

Simple form	V-ing form
I can shutter you can shutter he can shutter we can shutter you can shutter they can shutter	I can be shuttering you can be shuttering he can be shuttering we can be shuttering you can be shuttering they can be shuttering
Perfect	V-ing perfect
I can have shuttered you can have shuttered he can have shuttered we can have shuttered you can have shuttered they can have shuttered	I can have been shuttering you can have been shuttering he can have been shuttering we can have been shuttering you can have been shuttering they can have been shuttering

Negation

Simple form	V-ing form
I can't shutter you can't shutter he can't shutter we can't shutter you can't shutter they can't shutter	I can't be shuttering you can't be shuttering he can't be shuttering we can't be shuttering you can't be shuttering they can't be shuttering
Perfect	V-ing perfect
I can't have shuttered you can't have shuttered he can't have shuttered we can't have shuttered you can't have shuttered they can't have shuttered	I can't have been shuttering you can't have been shuttering he can't have been shuttering we can't have been shuttering you can't have been shuttering they can't have been shuttering

Interrogative form

Simple form	V-ing form
can I shutter? can you shutter? can he shutter? can we shutter? can you shutter? can they shutter?	can I be shuttering? can you be shuttering? can he be shuttering? can we be shuttering? can you be shuttering? can they be shuttering?
Perfect	V-ing perfect
can I have shuttered? can you have shuttered? can he have shuttered? can we have shuttered? can you have shuttered? can they have shuttered?	can I have been shuttering? can you have been shuttering? can he have been shuttering? can we have been shuttering? can you have been shuttering? can they have been shuttering?

Interro-negative form

Simple form	V-ing form
can't I shutter? can't you shutter? can't he shutter? can't we shutter? can't you shutter? can't they shutter?	can't I be shuttering? can't you be shuttering? can't he be shuttering? can't we be shuttering? can't you be shuttering? can't they be shuttering?
Perfect	V-ing perfect
can't I have shuttered? can't you have shuttered? can't he have shuttered? can't we have shuttered? can't you have shuttered? can't they have shuttered?	can't I have been shuttering? can't you have been shuttering? can't he have been shuttering? can't we have been shuttering? can't you have been shuttering? can't they have been shuttering?