I must unwind you must unwind he must unwind we must unwind you must unwind they must unwind
V-ing form
I must be unwinding you must be unwinding he must be unwinding we must be unwinding you must be unwinding they must be unwinding
Perfect
I must have unwound you must have unwound he must have unwound we must have unwound you must have unwound they must have unwound
V-ing perfect
I must have been unwinding you must have been unwinding he must have been unwinding we must have been unwinding you must have been unwinding they must have been unwinding
Negation
Simple form
I mustn't unwind you mustn't unwind he mustn't unwind we mustn't unwind you mustn't unwind they mustn't unwind
V-ing form
I mustn't be unwinding you mustn't be unwinding he mustn't be unwinding we mustn't be unwinding you mustn't be unwinding they mustn't be unwinding
Perfect
I mustn't have unwound you mustn't have unwound he mustn't have unwound we mustn't have unwound you mustn't have unwound they mustn't have unwound
V-ing perfect
I mustn't have been unwinding you mustn't have been unwinding he mustn't have been unwinding we mustn't have been unwinding you mustn't have been unwinding they mustn't have been unwinding
Interrogative form
Simple form
must I unwind? must you unwind? must he unwind? must we unwind? must you unwind? must they unwind?
V-ing form
must I be unwinding? must you be unwinding? must he be unwinding? must we be unwinding? must you be unwinding? must they be unwinding?
Perfect
must I have unwound? must you have unwound? must he have unwound? must we have unwound? must you have unwound? must they have unwound?
V-ing perfect
must I have been unwinding? must you have been unwinding? must he have been unwinding? must we have been unwinding? must you have been unwinding? must they have been unwinding?
Interro-negative form
Simple form
mustn't I unwind? mustn't you unwind? mustn't he unwind? mustn't we unwind? mustn't you unwind? mustn't they unwind?
V-ing form
mustn't I be unwinding? mustn't you be unwinding? mustn't he be unwinding? mustn't we be unwinding? mustn't you be unwinding? mustn't they be unwinding?
Perfect
mustn't I have unwound? mustn't you have unwound? mustn't he have unwound? mustn't we have unwound? mustn't you have unwound? mustn't they have unwound?
V-ing perfect
mustn't I have been unwinding? mustn't you have been unwinding? mustn't he have been unwinding? mustn't we have been unwinding? mustn't you have been unwinding? mustn't they have been unwinding?