I could prenegotiate you could prenegotiate he could prenegotiate we could prenegotiate you could prenegotiate they could prenegotiate
V-ing form
I could be prenegotiating you could be prenegotiating he could be prenegotiating we could be prenegotiating you could be prenegotiating they could be prenegotiating
Perfect
I could have prenegotiated you could have prenegotiated he could have prenegotiated we could have prenegotiated you could have prenegotiated they could have prenegotiated
V-ing perfect
I could have been prenegotiating you could have been prenegotiating he could have been prenegotiating we could have been prenegotiating you could have been prenegotiating they could have been prenegotiating
Negation
Simple form
I could not prenegotiate you could not prenegotiate he could not prenegotiate we could not prenegotiate you could not prenegotiate they could not prenegotiate
V-ing form
I could not be prenegotiating you could not be prenegotiating he could not be prenegotiating we could not be prenegotiating you could not be prenegotiating they could not be prenegotiating
Perfect
I could not have prenegotiated you could not have prenegotiated he could not have prenegotiated we could not have prenegotiated you could not have prenegotiated they could not have prenegotiated
V-ing perfect
I could not have been prenegotiating you could not have been prenegotiating he could not have been prenegotiating we could not have been prenegotiating you could not have been prenegotiating they could not have been prenegotiating
Interrogative form
Simple form
could I prenegotiate? could you prenegotiate? could he prenegotiate? could we prenegotiate? could you prenegotiate? could they prenegotiate?
V-ing form
could I be prenegotiating? could you be prenegotiating? could he be prenegotiating? could we be prenegotiating? could you be prenegotiating? could they be prenegotiating?
Perfect
could I have prenegotiated? could you have prenegotiated? could he have prenegotiated? could we have prenegotiated? could you have prenegotiated? could they have prenegotiated?
V-ing perfect
could I have been prenegotiating? could you have been prenegotiating? could he have been prenegotiating? could we have been prenegotiating? could you have been prenegotiating? could they have been prenegotiating?
Interro-negative form
Simple form
could I not prenegotiate? could you not prenegotiate? could he not prenegotiate? could we not prenegotiate? could you not prenegotiate? could they not prenegotiate?
V-ing form
could I not be prenegotiating? could you not be prenegotiating? could he not be prenegotiating? could we not be prenegotiating? could you not be prenegotiating? could they not be prenegotiating?
Perfect
could I not have prenegotiated? could you not have prenegotiated? could he not have prenegotiated? could we not have prenegotiated? could you not have prenegotiated? could they not have prenegotiated?
V-ing perfect
could I not have been prenegotiating? could you not have been prenegotiating? could he not have been prenegotiating? could we not have been prenegotiating? could you not have been prenegotiating? could they not have been prenegotiating?