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