English verb conjugation
MUST UNKNOT

Regular verb: unknot - unknotted - unknotted

Affirmation

Simple form	V-ing form
I must unknot you must unknot she must unknot we must unknot you must unknot they must unknot	I must be unknotting you must be unknotting she must be unknotting we must be unknotting you must be unknotting they must be unknotting
Perfect	V-ing perfect
I must have unknotted you must have unknotted she must have unknotted we must have unknotted you must have unknotted they must have unknotted	I must have been unknotting you must have been unknotting she must have been unknotting we must have been unknotting you must have been unknotting they must have been unknotting

Negation

Simple form	V-ing form
I must not unknot you must not unknot she must not unknot we must not unknot you must not unknot they must not unknot	I must not be unknotting you must not be unknotting she must not be unknotting we must not be unknotting you must not be unknotting they must not be unknotting
Perfect	V-ing perfect
I must not have unknotted you must not have unknotted she must not have unknotted we must not have unknotted you must not have unknotted they must not have unknotted	I must not have been unknotting you must not have been unknotting she must not have been unknotting we must not have been unknotting you must not have been unknotting they must not have been unknotting

Interrogative form

Simple form	V-ing form
must I unknot? must you unknot? must she unknot? must we unknot? must you unknot? must they unknot?	must I be unknotting? must you be unknotting? must she be unknotting? must we be unknotting? must you be unknotting? must they be unknotting?
Perfect	V-ing perfect
must I have unknotted? must you have unknotted? must she have unknotted? must we have unknotted? must you have unknotted? must they have unknotted?	must I have been unknotting? must you have been unknotting? must she have been unknotting? must we have been unknotting? must you have been unknotting? must they have been unknotting?

Interro-negative form

Simple form	V-ing form
must I not unknot? must you not unknot? must she not unknot? must we not unknot? must you not unknot? must they not unknot?	must I not be unknotting? must you not be unknotting? must she not be unknotting? must we not be unknotting? must you not be unknotting? must they not be unknotting?
Perfect	V-ing perfect
must I not have unknotted? must you not have unknotted? must she not have unknotted? must we not have unknotted? must you not have unknotted? must they not have unknotted?	must I not have been unknotting? must you not have been unknotting? must she not have been unknotting? must we not have been unknotting? must you not have been unknotting? must they not have been unknotting?