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 must not mousetrap you must not mousetrap he must not mousetrap we must not mousetrap you must not mousetrap they must not mousetrap	I must not be mousetraping you must not be mousetraping he must not be mousetraping we must not be mousetraping you must not be mousetraping they must not be mousetraping
Perfect	V-ing perfect
I must not have mousetraped you must not have mousetraped he must not have mousetraped we must not have mousetraped you must not have mousetraped they must not have mousetraped	I must not have been mousetraping you must not have been mousetraping he must not have been mousetraping we must not have been mousetraping you must not have been mousetraping they must not 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
must I not mousetrap? must you not mousetrap? must he not mousetrap? must we not mousetrap? must you not mousetrap? must they not mousetrap?	must I not be mousetraping? must you not be mousetraping? must he not be mousetraping? must we not be mousetraping? must you not be mousetraping? must they not be mousetraping?
Perfect	V-ing perfect
must I not have mousetraped? must you not have mousetraped? must he not have mousetraped? must we not have mousetraped? must you not have mousetraped? must they not have mousetraped?	must I not have been mousetraping? must you not have been mousetraping? must he not have been mousetraping? must we not have been mousetraping? must you not have been mousetraping? must they not have been mousetraping?