I must subspecialize you must subspecialize she must subspecialize we must subspecialize you must subspecialize they must subspecialize
Forme en V-ing
I must be subspecializing you must be subspecializing she must be subspecializing we must be subspecializing you must be subspecializing they must be subspecializing
Perfect
I must have subspecialized you must have subspecialized she must have subspecialized we must have subspecialized you must have subspecialized they must have subspecialized
Perfect en V-ing
I must have been subspecializing you must have been subspecializing she must have been subspecializing we must have been subspecializing you must have been subspecializing they must have been subspecializing
Négation
Forme simple
I must not subspecialize you must not subspecialize she must not subspecialize we must not subspecialize you must not subspecialize they must not subspecialize
Forme en V-ing
I must not be subspecializing you must not be subspecializing she must not be subspecializing we must not be subspecializing you must not be subspecializing they must not be subspecializing
Perfect
I must not have subspecialized you must not have subspecialized she must not have subspecialized we must not have subspecialized you must not have subspecialized they must not have subspecialized
Perfect en V-ing
I must not have been subspecializing you must not have been subspecializing she must not have been subspecializing we must not have been subspecializing you must not have been subspecializing they must not have been subspecializing
Forme interrogative
Forme simple
must I subspecialize? must you subspecialize? must she subspecialize? must we subspecialize? must you subspecialize? must they subspecialize?
Forme en V-ing
must I be subspecializing? must you be subspecializing? must she be subspecializing? must we be subspecializing? must you be subspecializing? must they be subspecializing?
Perfect
must I have subspecialized? must you have subspecialized? must she have subspecialized? must we have subspecialized? must you have subspecialized? must they have subspecialized?
Perfect en V-ing
must I have been subspecializing? must you have been subspecializing? must she have been subspecializing? must we have been subspecializing? must you have been subspecializing? must they have been subspecializing?
Forme interro-négative
Forme simple
must I not subspecialize? must you not subspecialize? must she not subspecialize? must we not subspecialize? must you not subspecialize? must they not subspecialize?
Forme en V-ing
must I not be subspecializing? must you not be subspecializing? must she not be subspecializing? must we not be subspecializing? must you not be subspecializing? must they not be subspecializing?
Perfect
must I not have subspecialized? must you not have subspecialized? must she not have subspecialized? must we not have subspecialized? must you not have subspecialized? must they not have subspecialized?
Perfect en V-ing
must I not have been subspecializing? must you not have been subspecializing? must she not have been subspecializing? must we not have been subspecializing? must you not have been subspecializing? must they not have been subspecializing?