English verb conjugation
MUST COUNTERQUESTION

Regular verb: counterquestion - counterquestioned - counterquestioned

Affirmation

Simple form	V-ing form
I must counterquestion you must counterquestion he must counterquestion we must counterquestion you must counterquestion they must counterquestion	I must be counterquestioning you must be counterquestioning he must be counterquestioning we must be counterquestioning you must be counterquestioning they must be counterquestioning
Perfect	V-ing perfect
I must have counterquestioned you must have counterquestioned he must have counterquestioned we must have counterquestioned you must have counterquestioned they must have counterquestioned	I must have been counterquestioning you must have been counterquestioning he must have been counterquestioning we must have been counterquestioning you must have been counterquestioning they must have been counterquestioning

Negation

Simple form	V-ing form
I mustn't counterquestion you mustn't counterquestion he mustn't counterquestion we mustn't counterquestion you mustn't counterquestion they mustn't counterquestion	I mustn't be counterquestioning you mustn't be counterquestioning he mustn't be counterquestioning we mustn't be counterquestioning you mustn't be counterquestioning they mustn't be counterquestioning
Perfect	V-ing perfect
I mustn't have counterquestioned you mustn't have counterquestioned he mustn't have counterquestioned we mustn't have counterquestioned you mustn't have counterquestioned they mustn't have counterquestioned	I mustn't have been counterquestioning you mustn't have been counterquestioning he mustn't have been counterquestioning we mustn't have been counterquestioning you mustn't have been counterquestioning they mustn't have been counterquestioning

Interrogative form

Simple form	V-ing form
must I counterquestion? must you counterquestion? must he counterquestion? must we counterquestion? must you counterquestion? must they counterquestion?	must I be counterquestioning? must you be counterquestioning? must he be counterquestioning? must we be counterquestioning? must you be counterquestioning? must they be counterquestioning?
Perfect	V-ing perfect
must I have counterquestioned? must you have counterquestioned? must he have counterquestioned? must we have counterquestioned? must you have counterquestioned? must they have counterquestioned?	must I have been counterquestioning? must you have been counterquestioning? must he have been counterquestioning? must we have been counterquestioning? must you have been counterquestioning? must they have been counterquestioning?

Interro-negative form

Simple form	V-ing form
mustn't I counterquestion? mustn't you counterquestion? mustn't he counterquestion? mustn't we counterquestion? mustn't you counterquestion? mustn't they counterquestion?	mustn't I be counterquestioning? mustn't you be counterquestioning? mustn't he be counterquestioning? mustn't we be counterquestioning? mustn't you be counterquestioning? mustn't they be counterquestioning?
Perfect	V-ing perfect
mustn't I have counterquestioned? mustn't you have counterquestioned? mustn't he have counterquestioned? mustn't we have counterquestioned? mustn't you have counterquestioned? mustn't they have counterquestioned?	mustn't I have been counterquestioning? mustn't you have been counterquestioning? mustn't he have been counterquestioning? mustn't we have been counterquestioning? mustn't you have been counterquestioning? mustn't they have been counterquestioning?