I could vie you could vie she could vie we could vie you could vie they could vie
V-ing form
I could be vying you could be vying she could be vying we could be vying you could be vying they could be vying
Perfect
I could have vied you could have vied she could have vied we could have vied you could have vied they could have vied
V-ing perfect
I could have been vying you could have been vying she could have been vying we could have been vying you could have been vying they could have been vying
Negation
Simple form
I could not vie you could not vie she could not vie we could not vie you could not vie they could not vie
V-ing form
I could not be vying you could not be vying she could not be vying we could not be vying you could not be vying they could not be vying
Perfect
I could not have vied you could not have vied she could not have vied we could not have vied you could not have vied they could not have vied
V-ing perfect
I could not have been vying you could not have been vying she could not have been vying we could not have been vying you could not have been vying they could not have been vying
Interrogative form
Simple form
could I vie? could you vie? could she vie? could we vie? could you vie? could they vie?
V-ing form
could I be vying? could you be vying? could she be vying? could we be vying? could you be vying? could they be vying?
Perfect
could I have vied? could you have vied? could she have vied? could we have vied? could you have vied? could they have vied?
V-ing perfect
could I have been vying? could you have been vying? could she have been vying? could we have been vying? could you have been vying? could they have been vying?
Interro-negative form
Simple form
could I not vie? could you not vie? could she not vie? could we not vie? could you not vie? could they not vie?
V-ing form
could I not be vying? could you not be vying? could she not be vying? could we not be vying? could you not be vying? could they not be vying?
Perfect
could I not have vied? could you not have vied? could she not have vied? could we not have vied? could you not have vied? could they not have vied?
V-ing perfect
could I not have been vying? could you not have been vying? could she not have been vying? could we not have been vying? could you not have been vying? could they not have been vying?