I must vaporise you must vaporise he must vaporise we must vaporise you must vaporise they must vaporise
V-ing form
I must be vaporising you must be vaporising he must be vaporising we must be vaporising you must be vaporising they must be vaporising
Perfect
I must have vaporised you must have vaporised he must have vaporised we must have vaporised you must have vaporised they must have vaporised
V-ing perfect
I must have been vaporising you must have been vaporising he must have been vaporising we must have been vaporising you must have been vaporising they must have been vaporising
Negation
Simple form
I must not vaporise you must not vaporise he must not vaporise we must not vaporise you must not vaporise they must not vaporise
V-ing form
I must not be vaporising you must not be vaporising he must not be vaporising we must not be vaporising you must not be vaporising they must not be vaporising
Perfect
I must not have vaporised you must not have vaporised he must not have vaporised we must not have vaporised you must not have vaporised they must not have vaporised
V-ing perfect
I must not have been vaporising you must not have been vaporising he must not have been vaporising we must not have been vaporising you must not have been vaporising they must not have been vaporising
Interrogative form
Simple form
must I vaporise? must you vaporise? must he vaporise? must we vaporise? must you vaporise? must they vaporise?
V-ing form
must I be vaporising? must you be vaporising? must he be vaporising? must we be vaporising? must you be vaporising? must they be vaporising?
Perfect
must I have vaporised? must you have vaporised? must he have vaporised? must we have vaporised? must you have vaporised? must they have vaporised?
V-ing perfect
must I have been vaporising? must you have been vaporising? must he have been vaporising? must we have been vaporising? must you have been vaporising? must they have been vaporising?
Interro-negative form
Simple form
must I not vaporise? must you not vaporise? must he not vaporise? must we not vaporise? must you not vaporise? must they not vaporise?
V-ing form
must I not be vaporising? must you not be vaporising? must he not be vaporising? must we not be vaporising? must you not be vaporising? must they not be vaporising?
Perfect
must I not have vaporised? must you not have vaporised? must he not have vaporised? must we not have vaporised? must you not have vaporised? must they not have vaporised?
V-ing perfect
must I not have been vaporising? must you not have been vaporising? must he not have been vaporising? must we not have been vaporising? must you not have been vaporising? must they not have been vaporising?