I can decelerate you can decelerate she can decelerate we can decelerate you can decelerate they can decelerate
V-ing form
I can be decelerating you can be decelerating she can be decelerating we can be decelerating you can be decelerating they can be decelerating
Perfect
I can have decelerated you can have decelerated she can have decelerated we can have decelerated you can have decelerated they can have decelerated
V-ing perfect
I can have been decelerating you can have been decelerating she can have been decelerating we can have been decelerating you can have been decelerating they can have been decelerating
Negation
Simple form
I can't decelerate you can't decelerate she can't decelerate we can't decelerate you can't decelerate they can't decelerate
V-ing form
I can't be decelerating you can't be decelerating she can't be decelerating we can't be decelerating you can't be decelerating they can't be decelerating
Perfect
I can't have decelerated you can't have decelerated she can't have decelerated we can't have decelerated you can't have decelerated they can't have decelerated
V-ing perfect
I can't have been decelerating you can't have been decelerating she can't have been decelerating we can't have been decelerating you can't have been decelerating they can't have been decelerating
Interrogative form
Simple form
can I decelerate? can you decelerate? can she decelerate? can we decelerate? can you decelerate? can they decelerate?
V-ing form
can I be decelerating? can you be decelerating? can she be decelerating? can we be decelerating? can you be decelerating? can they be decelerating?
Perfect
can I have decelerated? can you have decelerated? can she have decelerated? can we have decelerated? can you have decelerated? can they have decelerated?
V-ing perfect
can I have been decelerating? can you have been decelerating? can she have been decelerating? can we have been decelerating? can you have been decelerating? can they have been decelerating?
Interro-negative form
Simple form
can't I decelerate? can't you decelerate? can't she decelerate? can't we decelerate? can't you decelerate? can't they decelerate?
V-ing form
can't I be decelerating? can't you be decelerating? can't she be decelerating? can't we be decelerating? can't you be decelerating? can't they be decelerating?
Perfect
can't I have decelerated? can't you have decelerated? can't she have decelerated? can't we have decelerated? can't you have decelerated? can't they have decelerated?
V-ing perfect
can't I have been decelerating? can't you have been decelerating? can't she have been decelerating? can't we have been decelerating? can't you have been decelerating? can't they have been decelerating?