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