could impact
Regular verb: impact - impacted- impacted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could impact
you could impact
she could impact
we could impact
you could impact
they could impact 	I could be impacting
you could be impacting
she could be impacting
we could be impacting
you could be impacting
they could be impacting	I could have impacted
you could have impacted
she could have impacted
we could have impacted
you could have impacted
they could have impacted	I could have been impacting
you could have been impacting
she could have been impacting
we could have been impacting
you could have been impacting
they could have been impacting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't impact
you couldn't impact
she couldn't impact
we couldn't impact
you couldn't impact
they couldn't impact 	I couldn't be impacting
you couldn't be impacting
she couldn't be impacting
we couldn't be impacting
you couldn't be impacting
they couldn't be impacting	I couldn't have impacted
you couldn't have impacted
she couldn't have impacted
we couldn't have impacted
you couldn't have impacted
they couldn't have impacted	I couldn't have been impacting
you couldn't have been impacting
she couldn't have been impacting
we couldn't have been impacting
you couldn't have been impacting
they couldn't have been impacting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I impact?
could you impact?
could she impact?
could we impact?
could you impact?
could they impact? 	could I be impacting?
could you be impacting?
could she be impacting?
could we be impacting?
could you be impacting?
could they be impacting? 	could I have impacted?
could you have impacted?
could she have impacted?
could we have impacted?
could you have impacted?
could they have impacted? 	could I have been impacting?
could you have been impacting?
could she have been impacting?
could we have been impacting?
could you have been impacting?
could they have been impacting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I impact?
couldn't you impact?
couldn't she impact?
couldn't we impact?
couldn't you impact?
couldn't they impact? 	couldn't I be impacting?
couldn't you be impacting?
couldn't she be impacting?
couldn't we be impacting?
couldn't you be impacting?
couldn't they be impacting? 	couldn't I have impacted?
couldn't you have impacted?
couldn't she have impacted?
couldn't we have impacted?
couldn't you have impacted?
couldn't they have impacted? 	couldn't I have been impacting?
couldn't you have been impacting?
couldn't she have been impacting?
couldn't we have been impacting?
couldn't you have been impacting?
couldn't they have been impacting?