English verb conjugation
CAN EXCHANGE

Regular verb: exchange - exchanged - exchanged

Affirmation

Simple form	V-ing form
I can exchange you can exchange he can exchange we can exchange you can exchange they can exchange	I can be exchanging you can be exchanging he can be exchanging we can be exchanging you can be exchanging they can be exchanging
Perfect	V-ing perfect
I can have exchanged you can have exchanged he can have exchanged we can have exchanged you can have exchanged they can have exchanged	I can have been exchanging you can have been exchanging he can have been exchanging we can have been exchanging you can have been exchanging they can have been exchanging

Negation

Simple form	V-ing form
I can't exchange you can't exchange he can't exchange we can't exchange you can't exchange they can't exchange	I can't be exchanging you can't be exchanging he can't be exchanging we can't be exchanging you can't be exchanging they can't be exchanging
Perfect	V-ing perfect
I can't have exchanged you can't have exchanged he can't have exchanged we can't have exchanged you can't have exchanged they can't have exchanged	I can't have been exchanging you can't have been exchanging he can't have been exchanging we can't have been exchanging you can't have been exchanging they can't have been exchanging

Interrogative form

Simple form	V-ing form
can I exchange? can you exchange? can he exchange? can we exchange? can you exchange? can they exchange?	can I be exchanging? can you be exchanging? can he be exchanging? can we be exchanging? can you be exchanging? can they be exchanging?
Perfect	V-ing perfect
can I have exchanged? can you have exchanged? can he have exchanged? can we have exchanged? can you have exchanged? can they have exchanged?	can I have been exchanging? can you have been exchanging? can he have been exchanging? can we have been exchanging? can you have been exchanging? can they have been exchanging?

Interro-negative form

Simple form	V-ing form
can't I exchange? can't you exchange? can't he exchange? can't we exchange? can't you exchange? can't they exchange?	can't I be exchanging? can't you be exchanging? can't he be exchanging? can't we be exchanging? can't you be exchanging? can't they be exchanging?
Perfect	V-ing perfect
can't I have exchanged? can't you have exchanged? can't he have exchanged? can't we have exchanged? can't you have exchanged? can't they have exchanged?	can't I have been exchanging? can't you have been exchanging? can't he have been exchanging? can't we have been exchanging? can't you have been exchanging? can't they have been exchanging?