I must chance you must chance she must chance we must chance you must chance they must chance
V-ing form
I must be chancing you must be chancing she must be chancing we must be chancing you must be chancing they must be chancing
Perfect
I must have chanced you must have chanced she must have chanced we must have chanced you must have chanced they must have chanced
V-ing perfect
I must have been chancing you must have been chancing she must have been chancing we must have been chancing you must have been chancing they must have been chancing
Negation
Simple form
I must not chance you must not chance she must not chance we must not chance you must not chance they must not chance
V-ing form
I must not be chancing you must not be chancing she must not be chancing we must not be chancing you must not be chancing they must not be chancing
Perfect
I must not have chanced you must not have chanced she must not have chanced we must not have chanced you must not have chanced they must not have chanced
V-ing perfect
I must not have been chancing you must not have been chancing she must not have been chancing we must not have been chancing you must not have been chancing they must not have been chancing
Interrogative form
Simple form
must I chance? must you chance? must she chance? must we chance? must you chance? must they chance?
V-ing form
must I be chancing? must you be chancing? must she be chancing? must we be chancing? must you be chancing? must they be chancing?
Perfect
must I have chanced? must you have chanced? must she have chanced? must we have chanced? must you have chanced? must they have chanced?
V-ing perfect
must I have been chancing? must you have been chancing? must she have been chancing? must we have been chancing? must you have been chancing? must they have been chancing?
Interro-negative form
Simple form
must I not chance? must you not chance? must she not chance? must we not chance? must you not chance? must they not chance?
V-ing form
must I not be chancing? must you not be chancing? must she not be chancing? must we not be chancing? must you not be chancing? must they not be chancing?
Perfect
must I not have chanced? must you not have chanced? must she not have chanced? must we not have chanced? must you not have chanced? must they not have chanced?
V-ing perfect
must I not have been chancing? must you not have been chancing? must she not have been chancing? must we not have been chancing? must you not have been chancing? must they not have been chancing?