Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must untwist untwist you must untwist untwist she must untwist untwist we must untwist untwist you must untwist untwist they must untwist untwist
V-ing form
I must be untwist untwisting you must be untwist untwisting she must be untwist untwisting we must be untwist untwisting you must be untwist untwisting they must be untwist untwisting
Perfect
I must have untwist untwisted you must have untwist untwisted she must have untwist untwisted we must have untwist untwisted you must have untwist untwisted they must have untwist untwisted
V-ing perfect
I must have been untwist untwisting you must have been untwist untwisting she must have been untwist untwisting we must have been untwist untwisting you must have been untwist untwisting they must have been untwist untwisting
Negation
Simple form
I must not untwist untwist you must not untwist untwist she must not untwist untwist we must not untwist untwist you must not untwist untwist they must not untwist untwist
V-ing form
I must not be untwist untwisting you must not be untwist untwisting she must not be untwist untwisting we must not be untwist untwisting you must not be untwist untwisting they must not be untwist untwisting
Perfect
I must not have untwist untwisted you must not have untwist untwisted she must not have untwist untwisted we must not have untwist untwisted you must not have untwist untwisted they must not have untwist untwisted
V-ing perfect
I must not have been untwist untwisting you must not have been untwist untwisting she must not have been untwist untwisting we must not have been untwist untwisting you must not have been untwist untwisting they must not have been untwist untwisting
Interrogative form
Simple form
must I untwist untwist? must you untwist untwist? must she untwist untwist? must we untwist untwist? must you untwist untwist? must they untwist untwist?
V-ing form
must I be untwist untwisting? must you be untwist untwisting? must she be untwist untwisting? must we be untwist untwisting? must you be untwist untwisting? must they be untwist untwisting?
Perfect
must I have untwist untwisted? must you have untwist untwisted? must she have untwist untwisted? must we have untwist untwisted? must you have untwist untwisted? must they have untwist untwisted?
V-ing perfect
must I have been untwist untwisting? must you have been untwist untwisting? must she have been untwist untwisting? must we have been untwist untwisting? must you have been untwist untwisting? must they have been untwist untwisting?
Interro-negative form
Simple form
must I not untwist untwist? must you not untwist untwist? must she not untwist untwist? must we not untwist untwist? must you not untwist untwist? must they not untwist untwist?
V-ing form
must I not be untwist untwisting? must you not be untwist untwisting? must she not be untwist untwisting? must we not be untwist untwisting? must you not be untwist untwisting? must they not be untwist untwisting?
Perfect
must I not have untwist untwisted? must you not have untwist untwisted? must she not have untwist untwisted? must we not have untwist untwisted? must you not have untwist untwisted? must they not have untwist untwisted?
V-ing perfect
must I not have been untwist untwisting? must you not have been untwist untwisting? must she not have been untwist untwisting? must we not have been untwist untwisting? must you not have been untwist untwisting? must they not have been untwist untwisting?