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