I must wind you must wind she must wind we must wind you must wind they must wind
V-ing form
I must be winding you must be winding she must be winding we must be winding you must be winding they must be winding
Perfect
I must have wound you must have wound she 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 she must have been winding we must have been winding you must have been winding they must have been winding
Negation
Simple form
I mustn't wind you mustn't wind she mustn't wind we mustn't wind you mustn't wind they mustn't wind
V-ing form
I mustn't be winding you mustn't be winding she mustn't be winding we mustn't be winding you mustn't be winding they mustn't be winding
Perfect
I mustn't have wound you mustn't have wound she mustn't have wound we mustn't have wound you mustn't have wound they mustn't have wound
V-ing perfect
I mustn't have been winding you mustn't have been winding she mustn't have been winding we mustn't have been winding you mustn't have been winding they mustn't have been winding
Interrogative form
Simple form
must I wind? must you wind? must she wind? must we wind? must you wind? must they wind?
V-ing form
must I be winding? must you be winding? must she be winding? must we be winding? must you be winding? must they be winding?
Perfect
must I have wound? must you have wound? must she 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 she have been winding? must we have been winding? must you have been winding? must they have been winding?
Interro-negative form
Simple form
mustn't I wind? mustn't you wind? mustn't she wind? mustn't we wind? mustn't you wind? mustn't they wind?
V-ing form
mustn't I be winding? mustn't you be winding? mustn't she be winding? mustn't we be winding? mustn't you be winding? mustn't they be winding?
Perfect
mustn't I have wound? mustn't you have wound? mustn't she have wound? mustn't we have wound? mustn't you have wound? mustn't they have wound?
V-ing perfect
mustn't I have been winding? mustn't you have been winding? mustn't she have been winding? mustn't we have been winding? mustn't you have been winding? mustn't they have been winding?