I must cross-section you must cross-section he must cross-section we must cross-section you must cross-section they must cross-section
V-ing form
I must be cross-sectioning you must be cross-sectioning he must be cross-sectioning we must be cross-sectioning you must be cross-sectioning they must be cross-sectioning
Perfect
I must have cross-sectioned you must have cross-sectioned he must have cross-sectioned we must have cross-sectioned you must have cross-sectioned they must have cross-sectioned
V-ing perfect
I must have been cross-sectioning you must have been cross-sectioning he must have been cross-sectioning we must have been cross-sectioning you must have been cross-sectioning they must have been cross-sectioning
Negation
Simple form
I must not cross-section you must not cross-section he must not cross-section we must not cross-section you must not cross-section they must not cross-section
V-ing form
I must not be cross-sectioning you must not be cross-sectioning he must not be cross-sectioning we must not be cross-sectioning you must not be cross-sectioning they must not be cross-sectioning
Perfect
I must not have cross-sectioned you must not have cross-sectioned he must not have cross-sectioned we must not have cross-sectioned you must not have cross-sectioned they must not have cross-sectioned
V-ing perfect
I must not have been cross-sectioning you must not have been cross-sectioning he must not have been cross-sectioning we must not have been cross-sectioning you must not have been cross-sectioning they must not have been cross-sectioning
Interrogative form
Simple form
must I cross-section? must you cross-section? must he cross-section? must we cross-section? must you cross-section? must they cross-section?
V-ing form
must I be cross-sectioning? must you be cross-sectioning? must he be cross-sectioning? must we be cross-sectioning? must you be cross-sectioning? must they be cross-sectioning?
Perfect
must I have cross-sectioned? must you have cross-sectioned? must he have cross-sectioned? must we have cross-sectioned? must you have cross-sectioned? must they have cross-sectioned?
V-ing perfect
must I have been cross-sectioning? must you have been cross-sectioning? must he have been cross-sectioning? must we have been cross-sectioning? must you have been cross-sectioning? must they have been cross-sectioning?
Interro-negative form
Simple form
must I not cross-section? must you not cross-section? must he not cross-section? must we not cross-section? must you not cross-section? must they not cross-section?
V-ing form
must I not be cross-sectioning? must you not be cross-sectioning? must he not be cross-sectioning? must we not be cross-sectioning? must you not be cross-sectioning? must they not be cross-sectioning?
Perfect
must I not have cross-sectioned? must you not have cross-sectioned? must he not have cross-sectioned? must we not have cross-sectioned? must you not have cross-sectioned? must they not have cross-sectioned?
V-ing perfect
must I not have been cross-sectioning? must you not have been cross-sectioning? must he not have been cross-sectioning? must we not have been cross-sectioning? must you not have been cross-sectioning? must they not have been cross-sectioning?