I must articulate you must articulate she must articulate we must articulate you must articulate they must articulate
V-ing form
I must be articulating you must be articulating she must be articulating we must be articulating you must be articulating they must be articulating
Perfect
I must have articulated you must have articulated she must have articulated we must have articulated you must have articulated they must have articulated
V-ing perfect
I must have been articulating you must have been articulating she must have been articulating we must have been articulating you must have been articulating they must have been articulating
Negation
Simple form
I must not articulate you must not articulate she must not articulate we must not articulate you must not articulate they must not articulate
V-ing form
I must not be articulating you must not be articulating she must not be articulating we must not be articulating you must not be articulating they must not be articulating
Perfect
I must not have articulated you must not have articulated she must not have articulated we must not have articulated you must not have articulated they must not have articulated
V-ing perfect
I must not have been articulating you must not have been articulating she must not have been articulating we must not have been articulating you must not have been articulating they must not have been articulating
Interrogative form
Simple form
must I articulate? must you articulate? must she articulate? must we articulate? must you articulate? must they articulate?
V-ing form
must I be articulating? must you be articulating? must she be articulating? must we be articulating? must you be articulating? must they be articulating?
Perfect
must I have articulated? must you have articulated? must she have articulated? must we have articulated? must you have articulated? must they have articulated?
V-ing perfect
must I have been articulating? must you have been articulating? must she have been articulating? must we have been articulating? must you have been articulating? must they have been articulating?
Interro-negative form
Simple form
must I not articulate? must you not articulate? must she not articulate? must we not articulate? must you not articulate? must they not articulate?
V-ing form
must I not be articulating? must you not be articulating? must she not be articulating? must we not be articulating? must you not be articulating? must they not be articulating?
Perfect
must I not have articulated? must you not have articulated? must she not have articulated? must we not have articulated? must you not have articulated? must they not have articulated?
V-ing perfect
must I not have been articulating? must you not have been articulating? must she not have been articulating? must we not have been articulating? must you not have been articulating? must they not have been articulating?