English verb conjugation
MUST MOUSETRAP

Regular verb: mousetrap - mousetraped - mousetraped

Affirmation

Simple form	V-ing form
I must mousetrap you must mousetrap he must mousetrap we must mousetrap you must mousetrap they must mousetrap	I must be mousetraping you must be mousetraping he must be mousetraping we must be mousetraping you must be mousetraping they must be mousetraping
Perfect	V-ing perfect
I must have mousetraped you must have mousetraped he must have mousetraped we must have mousetraped you must have mousetraped they must have mousetraped	I must have been mousetraping you must have been mousetraping he must have been mousetraping we must have been mousetraping you must have been mousetraping they must have been mousetraping

Negation

Simple form	V-ing form
I mustn't mousetrap you mustn't mousetrap he mustn't mousetrap we mustn't mousetrap you mustn't mousetrap they mustn't mousetrap	I mustn't be mousetraping you mustn't be mousetraping he mustn't be mousetraping we mustn't be mousetraping you mustn't be mousetraping they mustn't be mousetraping
Perfect	V-ing perfect
I mustn't have mousetraped you mustn't have mousetraped he mustn't have mousetraped we mustn't have mousetraped you mustn't have mousetraped they mustn't have mousetraped	I mustn't have been mousetraping you mustn't have been mousetraping he mustn't have been mousetraping we mustn't have been mousetraping you mustn't have been mousetraping they mustn't have been mousetraping

Interrogative form

Simple form	V-ing form
must I mousetrap? must you mousetrap? must he mousetrap? must we mousetrap? must you mousetrap? must they mousetrap?	must I be mousetraping? must you be mousetraping? must he be mousetraping? must we be mousetraping? must you be mousetraping? must they be mousetraping?
Perfect	V-ing perfect
must I have mousetraped? must you have mousetraped? must he have mousetraped? must we have mousetraped? must you have mousetraped? must they have mousetraped?	must I have been mousetraping? must you have been mousetraping? must he have been mousetraping? must we have been mousetraping? must you have been mousetraping? must they have been mousetraping?

Interro-negative form

Simple form	V-ing form
mustn't I mousetrap? mustn't you mousetrap? mustn't he mousetrap? mustn't we mousetrap? mustn't you mousetrap? mustn't they mousetrap?	mustn't I be mousetraping? mustn't you be mousetraping? mustn't he be mousetraping? mustn't we be mousetraping? mustn't you be mousetraping? mustn't they be mousetraping?
Perfect	V-ing perfect
mustn't I have mousetraped? mustn't you have mousetraped? mustn't he have mousetraped? mustn't we have mousetraped? mustn't you have mousetraped? mustn't they have mousetraped?	mustn't I have been mousetraping? mustn't you have been mousetraping? mustn't he have been mousetraping? mustn't we have been mousetraping? mustn't you have been mousetraping? mustn't they have been mousetraping?