I can capsule you can capsule he can capsule we can capsule you can capsule they can capsule
V-ing form
I can be capsuling you can be capsuling he can be capsuling we can be capsuling you can be capsuling they can be capsuling
Perfect
I can have capsuled you can have capsuled he can have capsuled we can have capsuled you can have capsuled they can have capsuled
V-ing perfect
I can have been capsuling you can have been capsuling he can have been capsuling we can have been capsuling you can have been capsuling they can have been capsuling
Negation
Simple form
I can't capsule you can't capsule he can't capsule we can't capsule you can't capsule they can't capsule
V-ing form
I can't be capsuling you can't be capsuling he can't be capsuling we can't be capsuling you can't be capsuling they can't be capsuling
Perfect
I can't have capsuled you can't have capsuled he can't have capsuled we can't have capsuled you can't have capsuled they can't have capsuled
V-ing perfect
I can't have been capsuling you can't have been capsuling he can't have been capsuling we can't have been capsuling you can't have been capsuling they can't have been capsuling
Interrogative form
Simple form
can I capsule? can you capsule? can he capsule? can we capsule? can you capsule? can they capsule?
V-ing form
can I be capsuling? can you be capsuling? can he be capsuling? can we be capsuling? can you be capsuling? can they be capsuling?
Perfect
can I have capsuled? can you have capsuled? can he have capsuled? can we have capsuled? can you have capsuled? can they have capsuled?
V-ing perfect
can I have been capsuling? can you have been capsuling? can he have been capsuling? can we have been capsuling? can you have been capsuling? can they have been capsuling?
Interro-negative form
Simple form
can't I capsule? can't you capsule? can't he capsule? can't we capsule? can't you capsule? can't they capsule?
V-ing form
can't I be capsuling? can't you be capsuling? can't he be capsuling? can't we be capsuling? can't you be capsuling? can't they be capsuling?
Perfect
can't I have capsuled? can't you have capsuled? can't he have capsuled? can't we have capsuled? can't you have capsuled? can't they have capsuled?
V-ing perfect
can't I have been capsuling? can't you have been capsuling? can't he have been capsuling? can't we have been capsuling? can't you have been capsuling? can't they have been capsuling?