I must unify you must unify she must unify we must unify you must unify they must unify
V-ing form
I must be unifying you must be unifying she must be unifying we must be unifying you must be unifying they must be unifying
Perfect
I must have unified you must have unified she must have unified we must have unified you must have unified they must have unified
V-ing perfect
I must have been unifying you must have been unifying she must have been unifying we must have been unifying you must have been unifying they must have been unifying
Negation
Simple form
I must not unify you must not unify she must not unify we must not unify you must not unify they must not unify
V-ing form
I must not be unifying you must not be unifying she must not be unifying we must not be unifying you must not be unifying they must not be unifying
Perfect
I must not have unified you must not have unified she must not have unified we must not have unified you must not have unified they must not have unified
V-ing perfect
I must not have been unifying you must not have been unifying she must not have been unifying we must not have been unifying you must not have been unifying they must not have been unifying
Interrogative form
Simple form
must I unify? must you unify? must she unify? must we unify? must you unify? must they unify?
V-ing form
must I be unifying? must you be unifying? must she be unifying? must we be unifying? must you be unifying? must they be unifying?
Perfect
must I have unified? must you have unified? must she have unified? must we have unified? must you have unified? must they have unified?
V-ing perfect
must I have been unifying? must you have been unifying? must she have been unifying? must we have been unifying? must you have been unifying? must they have been unifying?
Interro-negative form
Simple form
must I not unify? must you not unify? must she not unify? must we not unify? must you not unify? must they not unify?
V-ing form
must I not be unifying? must you not be unifying? must she not be unifying? must we not be unifying? must you not be unifying? must they not be unifying?
Perfect
must I not have unified? must you not have unified? must she not have unified? must we not have unified? must you not have unified? must they not have unified?
V-ing perfect
must I not have been unifying? must you not have been unifying? must she not have been unifying? must we not have been unifying? must you not have been unifying? must they not have been unifying?