I must polymerise you must polymerise she must polymerise we must polymerise you must polymerise they must polymerise
V-ing form
I must be polymerising you must be polymerising she must be polymerising we must be polymerising you must be polymerising they must be polymerising
Perfect
I must have polymerised you must have polymerised she 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 she 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 she 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 she 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 she 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 she 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 she polymerise? must we polymerise? must you polymerise? must they polymerise?
V-ing form
must I be polymerising? must you be polymerising? must she be polymerising? must we be polymerising? must you be polymerising? must they be polymerising?
Perfect
must I have polymerised? must you have polymerised? must she 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 she 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 she 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 she 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 she 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 she have been polymerising? mustn't we have been polymerising? mustn't you have been polymerising? mustn't they have been polymerising?