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 mustn't unify you mustn't unify she mustn't unify we mustn't unify you mustn't unify they mustn't unify
V-ing form
I mustn't be unifying you mustn't be unifying she mustn't be unifying we mustn't be unifying you mustn't be unifying they mustn't be unifying
Perfect
I mustn't have unified you mustn't have unified she mustn't have unified we mustn't have unified you mustn't have unified they mustn't have unified
V-ing perfect
I mustn't have been unifying you mustn't have been unifying she mustn't have been unifying we mustn't have been unifying you mustn't have been unifying they mustn't 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
mustn't I unify? mustn't you unify? mustn't she unify? mustn't we unify? mustn't you unify? mustn't they unify?
V-ing form
mustn't I be unifying? mustn't you be unifying? mustn't she be unifying? mustn't we be unifying? mustn't you be unifying? mustn't they be unifying?
Perfect
mustn't I have unified? mustn't you have unified? mustn't she have unified? mustn't we have unified? mustn't you have unified? mustn't they have unified?
V-ing perfect
mustn't I have been unifying? mustn't you have been unifying? mustn't she have been unifying? mustn't we have been unifying? mustn't you have been unifying? mustn't they have been unifying?