English verb conjugation
CAN COUNTERQUESTION

Regular verb: counterquestion - counterquestioned - counterquestioned

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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