I could vie you could vie he could vie we could vie you could vie they could vie
V-ing form
I could be vying you could be vying he could be vying we could be vying you could be vying they could be vying
Perfect
I could have vied you could have vied he 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 he could have been vying we could have been vying you could have been vying they could have been vying
Negation
Simple form
I couldn't vie you couldn't vie he couldn't vie we couldn't vie you couldn't vie they couldn't vie
V-ing form
I couldn't be vying you couldn't be vying he couldn't be vying we couldn't be vying you couldn't be vying they couldn't be vying
Perfect
I couldn't have vied you couldn't have vied he couldn't have vied we couldn't have vied you couldn't have vied they couldn't have vied
V-ing perfect
I couldn't have been vying you couldn't have been vying he couldn't have been vying we couldn't have been vying you couldn't have been vying they couldn't have been vying
Interrogative form
Simple form
could I vie? could you vie? could he vie? could we vie? could you vie? could they vie?
V-ing form
could I be vying? could you be vying? could he be vying? could we be vying? could you be vying? could they be vying?
Perfect
could I have vied? could you have vied? could he 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 he have been vying? could we have been vying? could you have been vying? could they have been vying?
Interro-negative form
Simple form
couldn't I vie? couldn't you vie? couldn't he vie? couldn't we vie? couldn't you vie? couldn't they vie?
V-ing form
couldn't I be vying? couldn't you be vying? couldn't he be vying? couldn't we be vying? couldn't you be vying? couldn't they be vying?
Perfect
couldn't I have vied? couldn't you have vied? couldn't he have vied? couldn't we have vied? couldn't you have vied? couldn't they have vied?
V-ing perfect
couldn't I have been vying? couldn't you have been vying? couldn't he have been vying? couldn't we have been vying? couldn't you have been vying? couldn't they have been vying?