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