English verb conjugation
MUST COUNTERCLAIM

Regular verb: counterclaim - counterclaimed - counterclaimed

Affirmation

Simple form	V-ing form
I must counterclaim you must counterclaim he must counterclaim we must counterclaim you must counterclaim they must counterclaim	I must be counterclaiming you must be counterclaiming he must be counterclaiming we must be counterclaiming you must be counterclaiming they must be counterclaiming
Perfect	V-ing perfect
I must have counterclaimed you must have counterclaimed he must have counterclaimed we must have counterclaimed you must have counterclaimed they must have counterclaimed	I must have been counterclaiming you must have been counterclaiming he must have been counterclaiming we must have been counterclaiming you must have been counterclaiming they must have been counterclaiming

Negation

Simple form	V-ing form
I mustn't counterclaim you mustn't counterclaim he mustn't counterclaim we mustn't counterclaim you mustn't counterclaim they mustn't counterclaim	I mustn't be counterclaiming you mustn't be counterclaiming he mustn't be counterclaiming we mustn't be counterclaiming you mustn't be counterclaiming they mustn't be counterclaiming
Perfect	V-ing perfect
I mustn't have counterclaimed you mustn't have counterclaimed he mustn't have counterclaimed we mustn't have counterclaimed you mustn't have counterclaimed they mustn't have counterclaimed	I mustn't have been counterclaiming you mustn't have been counterclaiming he mustn't have been counterclaiming we mustn't have been counterclaiming you mustn't have been counterclaiming they mustn't have been counterclaiming

Interrogative form

Simple form	V-ing form
must I counterclaim? must you counterclaim? must he counterclaim? must we counterclaim? must you counterclaim? must they counterclaim?	must I be counterclaiming? must you be counterclaiming? must he be counterclaiming? must we be counterclaiming? must you be counterclaiming? must they be counterclaiming?
Perfect	V-ing perfect
must I have counterclaimed? must you have counterclaimed? must he have counterclaimed? must we have counterclaimed? must you have counterclaimed? must they have counterclaimed?	must I have been counterclaiming? must you have been counterclaiming? must he have been counterclaiming? must we have been counterclaiming? must you have been counterclaiming? must they have been counterclaiming?

Interro-negative form

Simple form	V-ing form
mustn't I counterclaim? mustn't you counterclaim? mustn't he counterclaim? mustn't we counterclaim? mustn't you counterclaim? mustn't they counterclaim?	mustn't I be counterclaiming? mustn't you be counterclaiming? mustn't he be counterclaiming? mustn't we be counterclaiming? mustn't you be counterclaiming? mustn't they be counterclaiming?
Perfect	V-ing perfect
mustn't I have counterclaimed? mustn't you have counterclaimed? mustn't he have counterclaimed? mustn't we have counterclaimed? mustn't you have counterclaimed? mustn't they have counterclaimed?	mustn't I have been counterclaiming? mustn't you have been counterclaiming? mustn't he have been counterclaiming? mustn't we have been counterclaiming? mustn't you have been counterclaiming? mustn't they have been counterclaiming?