I could rattle you could rattle he could rattle we could rattle you could rattle they could rattle
V-ing form
I could be rattling you could be rattling he could be rattling we could be rattling you could be rattling they could be rattling
Perfect
I could have rattled you could have rattled he could have rattled we could have rattled you could have rattled they could have rattled
V-ing perfect
I could have been rattling you could have been rattling he could have been rattling we could have been rattling you could have been rattling they could have been rattling
Negation
Simple form
I could not rattle you could not rattle he could not rattle we could not rattle you could not rattle they could not rattle
V-ing form
I could not be rattling you could not be rattling he could not be rattling we could not be rattling you could not be rattling they could not be rattling
Perfect
I could not have rattled you could not have rattled he could not have rattled we could not have rattled you could not have rattled they could not have rattled
V-ing perfect
I could not have been rattling you could not have been rattling he could not have been rattling we could not have been rattling you could not have been rattling they could not have been rattling
Interrogative form
Simple form
could I rattle? could you rattle? could he rattle? could we rattle? could you rattle? could they rattle?
V-ing form
could I be rattling? could you be rattling? could he be rattling? could we be rattling? could you be rattling? could they be rattling?
Perfect
could I have rattled? could you have rattled? could he have rattled? could we have rattled? could you have rattled? could they have rattled?
V-ing perfect
could I have been rattling? could you have been rattling? could he have been rattling? could we have been rattling? could you have been rattling? could they have been rattling?
Interro-negative form
Simple form
could I not rattle? could you not rattle? could he not rattle? could we not rattle? could you not rattle? could they not rattle?
V-ing form
could I not be rattling? could you not be rattling? could he not be rattling? could we not be rattling? could you not be rattling? could they not be rattling?
Perfect
could I not have rattled? could you not have rattled? could he not have rattled? could we not have rattled? could you not have rattled? could they not have rattled?
V-ing perfect
could I not have been rattling? could you not have been rattling? could he not have been rattling? could we not have been rattling? could you not have been rattling? could they not have been rattling?