English verb conjugation
MUST SWAP

Regular verb: swap - swaped - swaped

Affirmation

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

Negation

Simple form	V-ing form
I must not swap you must not swap he must not swap we must not swap you must not swap they must not swap	I must not be swaping you must not be swaping he must not be swaping we must not be swaping you must not be swaping they must not be swaping
Perfect	V-ing perfect
I must not have swaped you must not have swaped he must not have swaped we must not have swaped you must not have swaped they must not have swaped	I must not have been swaping you must not have been swaping he must not have been swaping we must not have been swaping you must not have been swaping they must not have been swaping

Interrogative form

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

Interro-negative form

Simple form	V-ing form
must I not swap? must you not swap? must he not swap? must we not swap? must you not swap? must they not swap?	must I not be swaping? must you not be swaping? must he not be swaping? must we not be swaping? must you not be swaping? must they not be swaping?
Perfect	V-ing perfect
must I not have swaped? must you not have swaped? must he not have swaped? must we not have swaped? must you not have swaped? must they not have swaped?	must I not have been swaping? must you not have been swaping? must he not have been swaping? must we not have been swaping? must you not have been swaping? must they not have been swaping?