I must need you must need she must need we must need you must need they must need
V-ing form
I must be needing you must be needing she must be needing we must be needing you must be needing they must be needing
Perfect
I must have needed you must have needed she must have needed we must have needed you must have needed they must have needed
V-ing perfect
I must have been needing you must have been needing she must have been needing we must have been needing you must have been needing they must have been needing
Negation
Simple form
I must not need you must not need she must not need we must not need you must not need they must not need
V-ing form
I must not be needing you must not be needing she must not be needing we must not be needing you must not be needing they must not be needing
Perfect
I must not have needed you must not have needed she must not have needed we must not have needed you must not have needed they must not have needed
V-ing perfect
I must not have been needing you must not have been needing she must not have been needing we must not have been needing you must not have been needing they must not have been needing
Interrogative form
Simple form
must I need? must you need? must she need? must we need? must you need? must they need?
V-ing form
must I be needing? must you be needing? must she be needing? must we be needing? must you be needing? must they be needing?
Perfect
must I have needed? must you have needed? must she have needed? must we have needed? must you have needed? must they have needed?
V-ing perfect
must I have been needing? must you have been needing? must she have been needing? must we have been needing? must you have been needing? must they have been needing?
Interro-negative form
Simple form
must I not need? must you not need? must she not need? must we not need? must you not need? must they not need?
V-ing form
must I not be needing? must you not be needing? must she not be needing? must we not be needing? must you not be needing? must they not be needing?
Perfect
must I not have needed? must you not have needed? must she not have needed? must we not have needed? must you not have needed? must they not have needed?
V-ing perfect
must I not have been needing? must you not have been needing? must she not have been needing? must we not have been needing? must you not have been needing? must they not have been needing?