I could influence you could influence she could influence we could influence you could influence they could influence
V-ing form
I could be influencing you could be influencing she could be influencing we could be influencing you could be influencing they could be influencing
Perfect
I could have influenced you could have influenced she could have influenced we could have influenced you could have influenced they could have influenced
V-ing perfect
I could have been influencing you could have been influencing she could have been influencing we could have been influencing you could have been influencing they could have been influencing
Negation
Simple form
I could not influence you could not influence she could not influence we could not influence you could not influence they could not influence
V-ing form
I could not be influencing you could not be influencing she could not be influencing we could not be influencing you could not be influencing they could not be influencing
Perfect
I could not have influenced you could not have influenced she could not have influenced we could not have influenced you could not have influenced they could not have influenced
V-ing perfect
I could not have been influencing you could not have been influencing she could not have been influencing we could not have been influencing you could not have been influencing they could not have been influencing
Interrogative form
Simple form
could I influence? could you influence? could she influence? could we influence? could you influence? could they influence?
V-ing form
could I be influencing? could you be influencing? could she be influencing? could we be influencing? could you be influencing? could they be influencing?
Perfect
could I have influenced? could you have influenced? could she have influenced? could we have influenced? could you have influenced? could they have influenced?
V-ing perfect
could I have been influencing? could you have been influencing? could she have been influencing? could we have been influencing? could you have been influencing? could they have been influencing?
Interro-negative form
Simple form
could I not influence? could you not influence? could she not influence? could we not influence? could you not influence? could they not influence?
V-ing form
could I not be influencing? could you not be influencing? could she not be influencing? could we not be influencing? could you not be influencing? could they not be influencing?
Perfect
could I not have influenced? could you not have influenced? could she not have influenced? could we not have influenced? could you not have influenced? could they not have influenced?
V-ing perfect
could I not have been influencing? could you not have been influencing? could she not have been influencing? could we not have been influencing? could you not have been influencing? could they not have been influencing?