English verb conjugation
MUST DOUBLE-LOCK

Regular verb: double-lock - double-locked - double-locked

Affirmation

Simple form	V-ing form
I must double-lock you must double-lock he must double-lock we must double-lock you must double-lock they must double-lock	I must be double-locking you must be double-locking he must be double-locking we must be double-locking you must be double-locking they must be double-locking
Perfect	V-ing perfect
I must have double-locked you must have double-locked he must have double-locked we must have double-locked you must have double-locked they must have double-locked	I must have been double-locking you must have been double-locking he must have been double-locking we must have been double-locking you must have been double-locking they must have been double-locking

Negation

Simple form	V-ing form
I must not double-lock you must not double-lock he must not double-lock we must not double-lock you must not double-lock they must not double-lock	I must not be double-locking you must not be double-locking he must not be double-locking we must not be double-locking you must not be double-locking they must not be double-locking
Perfect	V-ing perfect
I must not have double-locked you must not have double-locked he must not have double-locked we must not have double-locked you must not have double-locked they must not have double-locked	I must not have been double-locking you must not have been double-locking he must not have been double-locking we must not have been double-locking you must not have been double-locking they must not have been double-locking

Interrogative form

Simple form	V-ing form
must I double-lock? must you double-lock? must he double-lock? must we double-lock? must you double-lock? must they double-lock?	must I be double-locking? must you be double-locking? must he be double-locking? must we be double-locking? must you be double-locking? must they be double-locking?
Perfect	V-ing perfect
must I have double-locked? must you have double-locked? must he have double-locked? must we have double-locked? must you have double-locked? must they have double-locked?	must I have been double-locking? must you have been double-locking? must he have been double-locking? must we have been double-locking? must you have been double-locking? must they have been double-locking?

Interro-negative form

Simple form	V-ing form
must I not double-lock? must you not double-lock? must he not double-lock? must we not double-lock? must you not double-lock? must they not double-lock?	must I not be double-locking? must you not be double-locking? must he not be double-locking? must we not be double-locking? must you not be double-locking? must they not be double-locking?
Perfect	V-ing perfect
must I not have double-locked? must you not have double-locked? must he not have double-locked? must we not have double-locked? must you not have double-locked? must they not have double-locked?	must I not have been double-locking? must you not have been double-locking? must he not have been double-locking? must we not have been double-locking? must you not have been double-locking? must they not have been double-locking?