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 mustn't swap you mustn't swap he mustn't swap we mustn't swap you mustn't swap they mustn't swap	I mustn't be swaping you mustn't be swaping he mustn't be swaping we mustn't be swaping you mustn't be swaping they mustn't be swaping
Perfect	V-ing perfect
I mustn't have swaped you mustn't have swaped he mustn't have swaped we mustn't have swaped you mustn't have swaped they mustn't have swaped	I mustn't have been swaping you mustn't have been swaping he mustn't have been swaping we mustn't have been swaping you mustn't have been swaping they mustn't 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
mustn't I swap? mustn't you swap? mustn't he swap? mustn't we swap? mustn't you swap? mustn't they swap?	mustn't I be swaping? mustn't you be swaping? mustn't he be swaping? mustn't we be swaping? mustn't you be swaping? mustn't they be swaping?
Perfect	V-ing perfect
mustn't I have swaped? mustn't you have swaped? mustn't he have swaped? mustn't we have swaped? mustn't you have swaped? mustn't they have swaped?	mustn't I have been swaping? mustn't you have been swaping? mustn't he have been swaping? mustn't we have been swaping? mustn't you have been swaping? mustn't they have been swaping?