I could amble you could amble he could amble we could amble you could amble they could amble
V-ing form
I could be ambling you could be ambling he could be ambling we could be ambling you could be ambling they could be ambling
Perfect
I could have ambled you could have ambled he could have ambled we could have ambled you could have ambled they could have ambled
V-ing perfect
I could have been ambling you could have been ambling he could have been ambling we could have been ambling you could have been ambling they could have been ambling
Negation
Simple form
I could not amble you could not amble he could not amble we could not amble you could not amble they could not amble
V-ing form
I could not be ambling you could not be ambling he could not be ambling we could not be ambling you could not be ambling they could not be ambling
Perfect
I could not have ambled you could not have ambled he could not have ambled we could not have ambled you could not have ambled they could not have ambled
V-ing perfect
I could not have been ambling you could not have been ambling he could not have been ambling we could not have been ambling you could not have been ambling they could not have been ambling
Interrogative form
Simple form
could I amble? could you amble? could he amble? could we amble? could you amble? could they amble?
V-ing form
could I be ambling? could you be ambling? could he be ambling? could we be ambling? could you be ambling? could they be ambling?
Perfect
could I have ambled? could you have ambled? could he have ambled? could we have ambled? could you have ambled? could they have ambled?
V-ing perfect
could I have been ambling? could you have been ambling? could he have been ambling? could we have been ambling? could you have been ambling? could they have been ambling?
Interro-negative form
Simple form
could I not amble? could you not amble? could he not amble? could we not amble? could you not amble? could they not amble?
V-ing form
could I not be ambling? could you not be ambling? could he not be ambling? could we not be ambling? could you not be ambling? could they not be ambling?
Perfect
could I not have ambled? could you not have ambled? could he not have ambled? could we not have ambled? could you not have ambled? could they not have ambled?
V-ing perfect
could I not have been ambling? could you not have been ambling? could he not have been ambling? could we not have been ambling? could you not have been ambling? could they not have been ambling?