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 must not unwind you must not unwind he must not unwind we must not unwind you must not unwind they must not unwind
V-ing form
I must not be unwinding you must not be unwinding he must not be unwinding we must not be unwinding you must not be unwinding they must not be unwinding
Perfect
I must not have unwound you must not have unwound he must not have unwound we must not have unwound you must not have unwound they must not have unwound
V-ing perfect
I must not have been unwinding you must not have been unwinding he must not have been unwinding we must not have been unwinding you must not have been unwinding they must not 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
must I not unwind? must you not unwind? must he not unwind? must we not unwind? must you not unwind? must they not unwind?
V-ing form
must I not be unwinding? must you not be unwinding? must he not be unwinding? must we not be unwinding? must you not be unwinding? must they not be unwinding?
Perfect
must I not have unwound? must you not have unwound? must he not have unwound? must we not have unwound? must you not have unwound? must they not have unwound?
V-ing perfect
must I not have been unwinding? must you not have been unwinding? must he not have been unwinding? must we not have been unwinding? must you not have been unwinding? must they not have been unwinding?