I must demagnetise you must demagnetise he must demagnetise we must demagnetise you must demagnetise they must demagnetise
V-ing form
I must be demagnetising you must be demagnetising he must be demagnetising we must be demagnetising you must be demagnetising they must be demagnetising
Perfect
I must have demagnetised you must have demagnetised he must have demagnetised we must have demagnetised you must have demagnetised they must have demagnetised
V-ing perfect
I must have been demagnetising you must have been demagnetising he must have been demagnetising we must have been demagnetising you must have been demagnetising they must have been demagnetising
Negation
Simple form
I must not demagnetise you must not demagnetise he must not demagnetise we must not demagnetise you must not demagnetise they must not demagnetise
V-ing form
I must not be demagnetising you must not be demagnetising he must not be demagnetising we must not be demagnetising you must not be demagnetising they must not be demagnetising
Perfect
I must not have demagnetised you must not have demagnetised he must not have demagnetised we must not have demagnetised you must not have demagnetised they must not have demagnetised
V-ing perfect
I must not have been demagnetising you must not have been demagnetising he must not have been demagnetising we must not have been demagnetising you must not have been demagnetising they must not have been demagnetising
Interrogative form
Simple form
must I demagnetise? must you demagnetise? must he demagnetise? must we demagnetise? must you demagnetise? must they demagnetise?
V-ing form
must I be demagnetising? must you be demagnetising? must he be demagnetising? must we be demagnetising? must you be demagnetising? must they be demagnetising?
Perfect
must I have demagnetised? must you have demagnetised? must he have demagnetised? must we have demagnetised? must you have demagnetised? must they have demagnetised?
V-ing perfect
must I have been demagnetising? must you have been demagnetising? must he have been demagnetising? must we have been demagnetising? must you have been demagnetising? must they have been demagnetising?
Interro-negative form
Simple form
must I not demagnetise? must you not demagnetise? must he not demagnetise? must we not demagnetise? must you not demagnetise? must they not demagnetise?
V-ing form
must I not be demagnetising? must you not be demagnetising? must he not be demagnetising? must we not be demagnetising? must you not be demagnetising? must they not be demagnetising?
Perfect
must I not have demagnetised? must you not have demagnetised? must he not have demagnetised? must we not have demagnetised? must you not have demagnetised? must they not have demagnetised?
V-ing perfect
must I not have been demagnetising? must you not have been demagnetising? must he not have been demagnetising? must we not have been demagnetising? must you not have been demagnetising? must they not have been demagnetising?