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