I could presurround you could presurround he could presurround we could presurround you could presurround they could presurround
V-ing form
I could be presurrounding you could be presurrounding he could be presurrounding we could be presurrounding you could be presurrounding they could be presurrounding
Perfect
I could have presurrounded you could have presurrounded he could have presurrounded we could have presurrounded you could have presurrounded they could have presurrounded
V-ing perfect
I could have been presurrounding you could have been presurrounding he could have been presurrounding we could have been presurrounding you could have been presurrounding they could have been presurrounding
Negation
Simple form
I could not presurround you could not presurround he could not presurround we could not presurround you could not presurround they could not presurround
V-ing form
I could not be presurrounding you could not be presurrounding he could not be presurrounding we could not be presurrounding you could not be presurrounding they could not be presurrounding
Perfect
I could not have presurrounded you could not have presurrounded he could not have presurrounded we could not have presurrounded you could not have presurrounded they could not have presurrounded
V-ing perfect
I could not have been presurrounding you could not have been presurrounding he could not have been presurrounding we could not have been presurrounding you could not have been presurrounding they could not have been presurrounding
Interrogative form
Simple form
could I presurround? could you presurround? could he presurround? could we presurround? could you presurround? could they presurround?
V-ing form
could I be presurrounding? could you be presurrounding? could he be presurrounding? could we be presurrounding? could you be presurrounding? could they be presurrounding?
Perfect
could I have presurrounded? could you have presurrounded? could he have presurrounded? could we have presurrounded? could you have presurrounded? could they have presurrounded?
V-ing perfect
could I have been presurrounding? could you have been presurrounding? could he have been presurrounding? could we have been presurrounding? could you have been presurrounding? could they have been presurrounding?
Interro-negative form
Simple form
could I not presurround? could you not presurround? could he not presurround? could we not presurround? could you not presurround? could they not presurround?
V-ing form
could I not be presurrounding? could you not be presurrounding? could he not be presurrounding? could we not be presurrounding? could you not be presurrounding? could they not be presurrounding?
Perfect
could I not have presurrounded? could you not have presurrounded? could he not have presurrounded? could we not have presurrounded? could you not have presurrounded? could they not have presurrounded?
V-ing perfect
could I not have been presurrounding? could you not have been presurrounding? could he not have been presurrounding? could we not have been presurrounding? could you not have been presurrounding? could they not have been presurrounding?