Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must lock up you must lock up he must lock up we must lock up you must lock up they must lock up
V-ing form
I must be lock uping you must be lock uping he must be lock uping we must be lock uping you must be lock uping they must be lock uping
Perfect
I must have lock uped you must have lock uped he must have lock uped we must have lock uped you must have lock uped they must have lock uped
V-ing perfect
I must have been lock uping you must have been lock uping he must have been lock uping we must have been lock uping you must have been lock uping they must have been lock uping
Negation
Simple form
I must not lock up you must not lock up he must not lock up we must not lock up you must not lock up they must not lock up
V-ing form
I must not be lock uping you must not be lock uping he must not be lock uping we must not be lock uping you must not be lock uping they must not be lock uping
Perfect
I must not have lock uped you must not have lock uped he must not have lock uped we must not have lock uped you must not have lock uped they must not have lock uped
V-ing perfect
I must not have been lock uping you must not have been lock uping he must not have been lock uping we must not have been lock uping you must not have been lock uping they must not have been lock uping
Interrogative form
Simple form
must I lock up? must you lock up? must he lock up? must we lock up? must you lock up? must they lock up?
V-ing form
must I be lock uping? must you be lock uping? must he be lock uping? must we be lock uping? must you be lock uping? must they be lock uping?
Perfect
must I have lock uped? must you have lock uped? must he have lock uped? must we have lock uped? must you have lock uped? must they have lock uped?
V-ing perfect
must I have been lock uping? must you have been lock uping? must he have been lock uping? must we have been lock uping? must you have been lock uping? must they have been lock uping?
Interro-negative form
Simple form
must I not lock up? must you not lock up? must he not lock up? must we not lock up? must you not lock up? must they not lock up?
V-ing form
must I not be lock uping? must you not be lock uping? must he not be lock uping? must we not be lock uping? must you not be lock uping? must they not be lock uping?
Perfect
must I not have lock uped? must you not have lock uped? must he not have lock uped? must we not have lock uped? must you not have lock uped? must they not have lock uped?
V-ing perfect
must I not have been lock uping? must you not have been lock uping? must he not have been lock uping? must we not have been lock uping? must you not have been lock uping? must they not have been lock uping?