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