could prenegotiate
Regular verb: prenegotiate - prenegotiated- prenegotiated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could prenegotiate
you could prenegotiate
she could prenegotiate
we could prenegotiate
you could prenegotiate
they could prenegotiate 	I could be prenegotiating
you could be prenegotiating
she could be prenegotiating
we could be prenegotiating
you could be prenegotiating
they could be prenegotiating	I could have prenegotiated
you could have prenegotiated
she could have prenegotiated
we could have prenegotiated
you could have prenegotiated
they could have prenegotiated	I could have been prenegotiating
you could have been prenegotiating
she could have been prenegotiating
we could have been prenegotiating
you could have been prenegotiating
they could have been prenegotiating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't prenegotiate
you couldn't prenegotiate
she couldn't prenegotiate
we couldn't prenegotiate
you couldn't prenegotiate
they couldn't prenegotiate 	I couldn't be prenegotiating
you couldn't be prenegotiating
she couldn't be prenegotiating
we couldn't be prenegotiating
you couldn't be prenegotiating
they couldn't be prenegotiating	I couldn't have prenegotiated
you couldn't have prenegotiated
she couldn't have prenegotiated
we couldn't have prenegotiated
you couldn't have prenegotiated
they couldn't have prenegotiated	I couldn't have been prenegotiating
you couldn't have been prenegotiating
she couldn't have been prenegotiating
we couldn't have been prenegotiating
you couldn't have been prenegotiating
they couldn't have been prenegotiating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I prenegotiate?
could you prenegotiate?
could she prenegotiate?
could we prenegotiate?
could you prenegotiate?
could they prenegotiate? 	could I be prenegotiating?
could you be prenegotiating?
could she be prenegotiating?
could we be prenegotiating?
could you be prenegotiating?
could they be prenegotiating? 	could I have prenegotiated?
could you have prenegotiated?
could she have prenegotiated?
could we have prenegotiated?
could you have prenegotiated?
could they have prenegotiated? 	could I have been prenegotiating?
could you have been prenegotiating?
could she have been prenegotiating?
could we have been prenegotiating?
could you have been prenegotiating?
could they have been prenegotiating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I prenegotiate?
couldn't you prenegotiate?
couldn't she prenegotiate?
couldn't we prenegotiate?
couldn't you prenegotiate?
couldn't they prenegotiate? 	couldn't I be prenegotiating?
couldn't you be prenegotiating?
couldn't she be prenegotiating?
couldn't we be prenegotiating?
couldn't you be prenegotiating?
couldn't they be prenegotiating? 	couldn't I have prenegotiated?
couldn't you have prenegotiated?
couldn't she have prenegotiated?
couldn't we have prenegotiated?
couldn't you have prenegotiated?
couldn't they have prenegotiated? 	couldn't I have been prenegotiating?
couldn't you have been prenegotiating?
couldn't she have been prenegotiating?
couldn't we have been prenegotiating?
couldn't you have been prenegotiating?
couldn't they have been prenegotiating?