I must counterquestion you must counterquestion she must counterquestion we must counterquestion you must counterquestion they must counterquestion
V-ing form
I must be counterquestioning you must be counterquestioning she must be counterquestioning we must be counterquestioning you must be counterquestioning they must be counterquestioning
Perfect
I must have counterquestioned you must have counterquestioned she must have counterquestioned we must have counterquestioned you must have counterquestioned they must have counterquestioned
V-ing perfect
I must have been counterquestioning you must have been counterquestioning she must have been counterquestioning we must have been counterquestioning you must have been counterquestioning they must have been counterquestioning
Negation
Simple form
I must not counterquestion you must not counterquestion she must not counterquestion we must not counterquestion you must not counterquestion they must not counterquestion
V-ing form
I must not be counterquestioning you must not be counterquestioning she must not be counterquestioning we must not be counterquestioning you must not be counterquestioning they must not be counterquestioning
Perfect
I must not have counterquestioned you must not have counterquestioned she must not have counterquestioned we must not have counterquestioned you must not have counterquestioned they must not have counterquestioned
V-ing perfect
I must not have been counterquestioning you must not have been counterquestioning she must not have been counterquestioning we must not have been counterquestioning you must not have been counterquestioning they must not have been counterquestioning
Interrogative form
Simple form
must I counterquestion? must you counterquestion? must she counterquestion? must we counterquestion? must you counterquestion? must they counterquestion?
V-ing form
must I be counterquestioning? must you be counterquestioning? must she be counterquestioning? must we be counterquestioning? must you be counterquestioning? must they be counterquestioning?
Perfect
must I have counterquestioned? must you have counterquestioned? must she have counterquestioned? must we have counterquestioned? must you have counterquestioned? must they have counterquestioned?
V-ing perfect
must I have been counterquestioning? must you have been counterquestioning? must she have been counterquestioning? must we have been counterquestioning? must you have been counterquestioning? must they have been counterquestioning?
Interro-negative form
Simple form
must I not counterquestion? must you not counterquestion? must she not counterquestion? must we not counterquestion? must you not counterquestion? must they not counterquestion?
V-ing form
must I not be counterquestioning? must you not be counterquestioning? must she not be counterquestioning? must we not be counterquestioning? must you not be counterquestioning? must they not be counterquestioning?
Perfect
must I not have counterquestioned? must you not have counterquestioned? must she not have counterquestioned? must we not have counterquestioned? must you not have counterquestioned? must they not have counterquestioned?
V-ing perfect
must I not have been counterquestioning? must you not have been counterquestioning? must she not have been counterquestioning? must we not have been counterquestioning? must you not have been counterquestioning? must they not have been counterquestioning?