I must impact you must impact he must impact we must impact you must impact they must impact
V-ing form
I must be impacting you must be impacting he must be impacting we must be impacting you must be impacting they must be impacting
Perfect
I must have impacted you must have impacted he must have impacted we must have impacted you must have impacted they must have impacted
V-ing perfect
I must have been impacting you must have been impacting he must have been impacting we must have been impacting you must have been impacting they must have been impacting
Negation
Simple form
I must not impact you must not impact he must not impact we must not impact you must not impact they must not impact
V-ing form
I must not be impacting you must not be impacting he must not be impacting we must not be impacting you must not be impacting they must not be impacting
Perfect
I must not have impacted you must not have impacted he must not have impacted we must not have impacted you must not have impacted they must not have impacted
V-ing perfect
I must not have been impacting you must not have been impacting he must not have been impacting we must not have been impacting you must not have been impacting they must not have been impacting
Interrogative form
Simple form
must I impact? must you impact? must he impact? must we impact? must you impact? must they impact?
V-ing form
must I be impacting? must you be impacting? must he be impacting? must we be impacting? must you be impacting? must they be impacting?
Perfect
must I have impacted? must you have impacted? must he have impacted? must we have impacted? must you have impacted? must they have impacted?
V-ing perfect
must I have been impacting? must you have been impacting? must he have been impacting? must we have been impacting? must you have been impacting? must they have been impacting?
Interro-negative form
Simple form
must I not impact? must you not impact? must he not impact? must we not impact? must you not impact? must they not impact?
V-ing form
must I not be impacting? must you not be impacting? must he not be impacting? must we not be impacting? must you not be impacting? must they not be impacting?
Perfect
must I not have impacted? must you not have impacted? must he not have impacted? must we not have impacted? must you not have impacted? must they not have impacted?
V-ing perfect
must I not have been impacting? must you not have been impacting? must he not have been impacting? must we not have been impacting? must you not have been impacting? must they not have been impacting?