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