I must stipulate you must stipulate she must stipulate we must stipulate you must stipulate they must stipulate
V-ing form
I must be stipulating you must be stipulating she must be stipulating we must be stipulating you must be stipulating they must be stipulating
Perfect
I must have stipulated you must have stipulated she must have stipulated we must have stipulated you must have stipulated they must have stipulated
V-ing perfect
I must have been stipulating you must have been stipulating she must have been stipulating we must have been stipulating you must have been stipulating they must have been stipulating
Negation
Simple form
I must not stipulate you must not stipulate she must not stipulate we must not stipulate you must not stipulate they must not stipulate
V-ing form
I must not be stipulating you must not be stipulating she must not be stipulating we must not be stipulating you must not be stipulating they must not be stipulating
Perfect
I must not have stipulated you must not have stipulated she must not have stipulated we must not have stipulated you must not have stipulated they must not have stipulated
V-ing perfect
I must not have been stipulating you must not have been stipulating she must not have been stipulating we must not have been stipulating you must not have been stipulating they must not have been stipulating
Interrogative form
Simple form
must I stipulate? must you stipulate? must she stipulate? must we stipulate? must you stipulate? must they stipulate?
V-ing form
must I be stipulating? must you be stipulating? must she be stipulating? must we be stipulating? must you be stipulating? must they be stipulating?
Perfect
must I have stipulated? must you have stipulated? must she have stipulated? must we have stipulated? must you have stipulated? must they have stipulated?
V-ing perfect
must I have been stipulating? must you have been stipulating? must she have been stipulating? must we have been stipulating? must you have been stipulating? must they have been stipulating?
Interro-negative form
Simple form
must I not stipulate? must you not stipulate? must she not stipulate? must we not stipulate? must you not stipulate? must they not stipulate?
V-ing form
must I not be stipulating? must you not be stipulating? must she not be stipulating? must we not be stipulating? must you not be stipulating? must they not be stipulating?
Perfect
must I not have stipulated? must you not have stipulated? must she not have stipulated? must we not have stipulated? must you not have stipulated? must they not have stipulated?
V-ing perfect
must I not have been stipulating? must you not have been stipulating? must she not have been stipulating? must we not have been stipulating? must you not have been stipulating? must they not have been stipulating?