English verb conjugation
CAN SWAP

Regular verb: swap - swaped - swaped

Affirmation

Simple form	V-ing form
I can swap you can swap she can swap we can swap you can swap they can swap	I can be swaping you can be swaping she can be swaping we can be swaping you can be swaping they can be swaping
Perfect	V-ing perfect
I can have swaped you can have swaped she can have swaped we can have swaped you can have swaped they can have swaped	I can have been swaping you can have been swaping she can have been swaping we can have been swaping you can have been swaping they can have been swaping

Negation

Simple form	V-ing form
I can't swap you can't swap she can't swap we can't swap you can't swap they can't swap	I can't be swaping you can't be swaping she can't be swaping we can't be swaping you can't be swaping they can't be swaping
Perfect	V-ing perfect
I can't have swaped you can't have swaped she can't have swaped we can't have swaped you can't have swaped they can't have swaped	I can't have been swaping you can't have been swaping she can't have been swaping we can't have been swaping you can't have been swaping they can't have been swaping

Interrogative form

Simple form	V-ing form
can I swap? can you swap? can she swap? can we swap? can you swap? can they swap?	can I be swaping? can you be swaping? can she be swaping? can we be swaping? can you be swaping? can they be swaping?
Perfect	V-ing perfect
can I have swaped? can you have swaped? can she have swaped? can we have swaped? can you have swaped? can they have swaped?	can I have been swaping? can you have been swaping? can she have been swaping? can we have been swaping? can you have been swaping? can they have been swaping?

Interro-negative form

Simple form	V-ing form
can't I swap? can't you swap? can't she swap? can't we swap? can't you swap? can't they swap?	can't I be swaping? can't you be swaping? can't she be swaping? can't we be swaping? can't you be swaping? can't they be swaping?
Perfect	V-ing perfect
can't I have swaped? can't you have swaped? can't she have swaped? can't we have swaped? can't you have swaped? can't they have swaped?	can't I have been swaping? can't you have been swaping? can't she have been swaping? can't we have been swaping? can't you have been swaping? can't they have been swaping?