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