English verb conjugation
CAN UTTER

Regular verb: utter - uttered - uttered

Affirmation

Simple form	V-ing form
I can utter you can utter he can utter we can utter you can utter they can utter	I can be uttering you can be uttering he can be uttering we can be uttering you can be uttering they can be uttering
Perfect	V-ing perfect
I can have uttered you can have uttered he can have uttered we can have uttered you can have uttered they can have uttered	I can have been uttering you can have been uttering he can have been uttering we can have been uttering you can have been uttering they can have been uttering

Negation

Simple form	V-ing form
I can't utter you can't utter he can't utter we can't utter you can't utter they can't utter	I can't be uttering you can't be uttering he can't be uttering we can't be uttering you can't be uttering they can't be uttering
Perfect	V-ing perfect
I can't have uttered you can't have uttered he can't have uttered we can't have uttered you can't have uttered they can't have uttered	I can't have been uttering you can't have been uttering he can't have been uttering we can't have been uttering you can't have been uttering they can't have been uttering

Interrogative form

Simple form	V-ing form
can I utter? can you utter? can he utter? can we utter? can you utter? can they utter?	can I be uttering? can you be uttering? can he be uttering? can we be uttering? can you be uttering? can they be uttering?
Perfect	V-ing perfect
can I have uttered? can you have uttered? can he have uttered? can we have uttered? can you have uttered? can they have uttered?	can I have been uttering? can you have been uttering? can he have been uttering? can we have been uttering? can you have been uttering? can they have been uttering?

Interro-negative form

Simple form	V-ing form
can't I utter? can't you utter? can't he utter? can't we utter? can't you utter? can't they utter?	can't I be uttering? can't you be uttering? can't he be uttering? can't we be uttering? can't you be uttering? can't they be uttering?
Perfect	V-ing perfect
can't I have uttered? can't you have uttered? can't he have uttered? can't we have uttered? can't you have uttered? can't they have uttered?	can't I have been uttering? can't you have been uttering? can't he have been uttering? can't we have been uttering? can't you have been uttering? can't they have been uttering?