I must catapult you must catapult she must catapult we must catapult you must catapult they must catapult
V-ing form
I must be catapulting you must be catapulting she must be catapulting we must be catapulting you must be catapulting they must be catapulting
Perfect
I must have catapulted you must have catapulted she must have catapulted we must have catapulted you must have catapulted they must have catapulted
V-ing perfect
I must have been catapulting you must have been catapulting she must have been catapulting we must have been catapulting you must have been catapulting they must have been catapulting
Negation
Simple form
I must not catapult you must not catapult she must not catapult we must not catapult you must not catapult they must not catapult
V-ing form
I must not be catapulting you must not be catapulting she must not be catapulting we must not be catapulting you must not be catapulting they must not be catapulting
Perfect
I must not have catapulted you must not have catapulted she must not have catapulted we must not have catapulted you must not have catapulted they must not have catapulted
V-ing perfect
I must not have been catapulting you must not have been catapulting she must not have been catapulting we must not have been catapulting you must not have been catapulting they must not have been catapulting
Interrogative form
Simple form
must I catapult? must you catapult? must she catapult? must we catapult? must you catapult? must they catapult?
V-ing form
must I be catapulting? must you be catapulting? must she be catapulting? must we be catapulting? must you be catapulting? must they be catapulting?
Perfect
must I have catapulted? must you have catapulted? must she have catapulted? must we have catapulted? must you have catapulted? must they have catapulted?
V-ing perfect
must I have been catapulting? must you have been catapulting? must she have been catapulting? must we have been catapulting? must you have been catapulting? must they have been catapulting?
Interro-negative form
Simple form
must I not catapult? must you not catapult? must she not catapult? must we not catapult? must you not catapult? must they not catapult?
V-ing form
must I not be catapulting? must you not be catapulting? must she not be catapulting? must we not be catapulting? must you not be catapulting? must they not be catapulting?
Perfect
must I not have catapulted? must you not have catapulted? must she not have catapulted? must we not have catapulted? must you not have catapulted? must they not have catapulted?
V-ing perfect
must I not have been catapulting? must you not have been catapulting? must she not have been catapulting? must we not have been catapulting? must you not have been catapulting? must they not have been catapulting?