I must wind you must wind he must wind we must wind you must wind they must wind
V-ing form
I must be winding you must be winding he must be winding we must be winding you must be winding they must be winding
Perfect
I must have wound you must have wound he must have wound we must have wound you must have wound they must have wound
V-ing perfect
I must have been winding you must have been winding he must have been winding we must have been winding you must have been winding they must have been winding
Negation
Simple form
I must not wind you must not wind he must not wind we must not wind you must not wind they must not wind
V-ing form
I must not be winding you must not be winding he must not be winding we must not be winding you must not be winding they must not be winding
Perfect
I must not have wound you must not have wound he must not have wound we must not have wound you must not have wound they must not have wound
V-ing perfect
I must not have been winding you must not have been winding he must not have been winding we must not have been winding you must not have been winding they must not have been winding
Interrogative form
Simple form
must I wind? must you wind? must he wind? must we wind? must you wind? must they wind?
V-ing form
must I be winding? must you be winding? must he be winding? must we be winding? must you be winding? must they be winding?
Perfect
must I have wound? must you have wound? must he have wound? must we have wound? must you have wound? must they have wound?
V-ing perfect
must I have been winding? must you have been winding? must he have been winding? must we have been winding? must you have been winding? must they have been winding?
Interro-negative form
Simple form
must I not wind? must you not wind? must he not wind? must we not wind? must you not wind? must they not wind?
V-ing form
must I not be winding? must you not be winding? must he not be winding? must we not be winding? must you not be winding? must they not be winding?
Perfect
must I not have wound? must you not have wound? must he not have wound? must we not have wound? must you not have wound? must they not have wound?
V-ing perfect
must I not have been winding? must you not have been winding? must he not have been winding? must we not have been winding? must you not have been winding? must they not have been winding?