I must co-opt you must co-opt he must co-opt we must co-opt you must co-opt they must co-opt
V-ing form
I must be co-opting you must be co-opting he must be co-opting we must be co-opting you must be co-opting they must be co-opting
Perfect
I must have co-opted you must have co-opted he must have co-opted we must have co-opted you must have co-opted they must have co-opted
V-ing perfect
I must have been co-opting you must have been co-opting he must have been co-opting we must have been co-opting you must have been co-opting they must have been co-opting
Negation
Simple form
I mustn't co-opt you mustn't co-opt he mustn't co-opt we mustn't co-opt you mustn't co-opt they mustn't co-opt
V-ing form
I mustn't be co-opting you mustn't be co-opting he mustn't be co-opting we mustn't be co-opting you mustn't be co-opting they mustn't be co-opting
Perfect
I mustn't have co-opted you mustn't have co-opted he mustn't have co-opted we mustn't have co-opted you mustn't have co-opted they mustn't have co-opted
V-ing perfect
I mustn't have been co-opting you mustn't have been co-opting he mustn't have been co-opting we mustn't have been co-opting you mustn't have been co-opting they mustn't have been co-opting
Interrogative form
Simple form
must I co-opt? must you co-opt? must he co-opt? must we co-opt? must you co-opt? must they co-opt?
V-ing form
must I be co-opting? must you be co-opting? must he be co-opting? must we be co-opting? must you be co-opting? must they be co-opting?
Perfect
must I have co-opted? must you have co-opted? must he have co-opted? must we have co-opted? must you have co-opted? must they have co-opted?
V-ing perfect
must I have been co-opting? must you have been co-opting? must he have been co-opting? must we have been co-opting? must you have been co-opting? must they have been co-opting?
Interro-negative form
Simple form
mustn't I co-opt? mustn't you co-opt? mustn't he co-opt? mustn't we co-opt? mustn't you co-opt? mustn't they co-opt?
V-ing form
mustn't I be co-opting? mustn't you be co-opting? mustn't he be co-opting? mustn't we be co-opting? mustn't you be co-opting? mustn't they be co-opting?
Perfect
mustn't I have co-opted? mustn't you have co-opted? mustn't he have co-opted? mustn't we have co-opted? mustn't you have co-opted? mustn't they have co-opted?
V-ing perfect
mustn't I have been co-opting? mustn't you have been co-opting? mustn't he have been co-opting? mustn't we have been co-opting? mustn't you have been co-opting? mustn't they have been co-opting?