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