I must enlist you must enlist she must enlist we must enlist you must enlist they must enlist
V-ing form
I must be enlisting you must be enlisting she must be enlisting we must be enlisting you must be enlisting they must be enlisting
Perfect
I must have enlisted you must have enlisted she must have enlisted we must have enlisted you must have enlisted they must have enlisted
V-ing perfect
I must have been enlisting you must have been enlisting she must have been enlisting we must have been enlisting you must have been enlisting they must have been enlisting
Negation
Simple form
I must not enlist you must not enlist she must not enlist we must not enlist you must not enlist they must not enlist
V-ing form
I must not be enlisting you must not be enlisting she must not be enlisting we must not be enlisting you must not be enlisting they must not be enlisting
Perfect
I must not have enlisted you must not have enlisted she must not have enlisted we must not have enlisted you must not have enlisted they must not have enlisted
V-ing perfect
I must not have been enlisting you must not have been enlisting she must not have been enlisting we must not have been enlisting you must not have been enlisting they must not have been enlisting
Interrogative form
Simple form
must I enlist? must you enlist? must she enlist? must we enlist? must you enlist? must they enlist?
V-ing form
must I be enlisting? must you be enlisting? must she be enlisting? must we be enlisting? must you be enlisting? must they be enlisting?
Perfect
must I have enlisted? must you have enlisted? must she have enlisted? must we have enlisted? must you have enlisted? must they have enlisted?
V-ing perfect
must I have been enlisting? must you have been enlisting? must she have been enlisting? must we have been enlisting? must you have been enlisting? must they have been enlisting?
Interro-negative form
Simple form
must I not enlist? must you not enlist? must she not enlist? must we not enlist? must you not enlist? must they not enlist?
V-ing form
must I not be enlisting? must you not be enlisting? must she not be enlisting? must we not be enlisting? must you not be enlisting? must they not be enlisting?
Perfect
must I not have enlisted? must you not have enlisted? must she not have enlisted? must we not have enlisted? must you not have enlisted? must they not have enlisted?
V-ing perfect
must I not have been enlisting? must you not have been enlisting? must she not have been enlisting? must we not have been enlisting? must you not have been enlisting? must they not have been enlisting?