I must prance you must prance she must prance we must prance you must prance they must prance
V-ing form
I must be prancing you must be prancing she must be prancing we must be prancing you must be prancing they must be prancing
Perfect
I must have pranced you must have pranced she must have pranced we must have pranced you must have pranced they must have pranced
V-ing perfect
I must have been prancing you must have been prancing she must have been prancing we must have been prancing you must have been prancing they must have been prancing
Negation
Simple form
I must not prance you must not prance she must not prance we must not prance you must not prance they must not prance
V-ing form
I must not be prancing you must not be prancing she must not be prancing we must not be prancing you must not be prancing they must not be prancing
Perfect
I must not have pranced you must not have pranced she must not have pranced we must not have pranced you must not have pranced they must not have pranced
V-ing perfect
I must not have been prancing you must not have been prancing she must not have been prancing we must not have been prancing you must not have been prancing they must not have been prancing
Interrogative form
Simple form
must I prance? must you prance? must she prance? must we prance? must you prance? must they prance?
V-ing form
must I be prancing? must you be prancing? must she be prancing? must we be prancing? must you be prancing? must they be prancing?
Perfect
must I have pranced? must you have pranced? must she have pranced? must we have pranced? must you have pranced? must they have pranced?
V-ing perfect
must I have been prancing? must you have been prancing? must she have been prancing? must we have been prancing? must you have been prancing? must they have been prancing?
Interro-negative form
Simple form
must I not prance? must you not prance? must she not prance? must we not prance? must you not prance? must they not prance?
V-ing form
must I not be prancing? must you not be prancing? must she not be prancing? must we not be prancing? must you not be prancing? must they not be prancing?
Perfect
must I not have pranced? must you not have pranced? must she not have pranced? must we not have pranced? must you not have pranced? must they not have pranced?
V-ing perfect
must I not have been prancing? must you not have been prancing? must she not have been prancing? must we not have been prancing? must you not have been prancing? must they not have been prancing?