I must subdivide you must subdivide he must subdivide we must subdivide you must subdivide they must subdivide
V-ing form
I must be subdividing you must be subdividing he must be subdividing we must be subdividing you must be subdividing they must be subdividing
Perfect
I must have subdivided you must have subdivided he must have subdivided we must have subdivided you must have subdivided they must have subdivided
V-ing perfect
I must have been subdividing you must have been subdividing he must have been subdividing we must have been subdividing you must have been subdividing they must have been subdividing
Negation
Simple form
I must not subdivide you must not subdivide he must not subdivide we must not subdivide you must not subdivide they must not subdivide
V-ing form
I must not be subdividing you must not be subdividing he must not be subdividing we must not be subdividing you must not be subdividing they must not be subdividing
Perfect
I must not have subdivided you must not have subdivided he must not have subdivided we must not have subdivided you must not have subdivided they must not have subdivided
V-ing perfect
I must not have been subdividing you must not have been subdividing he must not have been subdividing we must not have been subdividing you must not have been subdividing they must not have been subdividing
Interrogative form
Simple form
must I subdivide? must you subdivide? must he subdivide? must we subdivide? must you subdivide? must they subdivide?
V-ing form
must I be subdividing? must you be subdividing? must he be subdividing? must we be subdividing? must you be subdividing? must they be subdividing?
Perfect
must I have subdivided? must you have subdivided? must he have subdivided? must we have subdivided? must you have subdivided? must they have subdivided?
V-ing perfect
must I have been subdividing? must you have been subdividing? must he have been subdividing? must we have been subdividing? must you have been subdividing? must they have been subdividing?
Interro-negative form
Simple form
must I not subdivide? must you not subdivide? must he not subdivide? must we not subdivide? must you not subdivide? must they not subdivide?
V-ing form
must I not be subdividing? must you not be subdividing? must he not be subdividing? must we not be subdividing? must you not be subdividing? must they not be subdividing?
Perfect
must I not have subdivided? must you not have subdivided? must he not have subdivided? must we not have subdivided? must you not have subdivided? must they not have subdivided?
V-ing perfect
must I not have been subdividing? must you not have been subdividing? must he not have been subdividing? must we not have been subdividing? must you not have been subdividing? must they not have been subdividing?