I could rabble you could rabble he could rabble we could rabble you could rabble they could rabble
V-ing form
I could be rabbling you could be rabbling he could be rabbling we could be rabbling you could be rabbling they could be rabbling
Perfect
I could have rabbled you could have rabbled he could have rabbled we could have rabbled you could have rabbled they could have rabbled
V-ing perfect
I could have been rabbling you could have been rabbling he could have been rabbling we could have been rabbling you could have been rabbling they could have been rabbling
Negation
Simple form
I could not rabble you could not rabble he could not rabble we could not rabble you could not rabble they could not rabble
V-ing form
I could not be rabbling you could not be rabbling he could not be rabbling we could not be rabbling you could not be rabbling they could not be rabbling
Perfect
I could not have rabbled you could not have rabbled he could not have rabbled we could not have rabbled you could not have rabbled they could not have rabbled
V-ing perfect
I could not have been rabbling you could not have been rabbling he could not have been rabbling we could not have been rabbling you could not have been rabbling they could not have been rabbling
Interrogative form
Simple form
could I rabble? could you rabble? could he rabble? could we rabble? could you rabble? could they rabble?
V-ing form
could I be rabbling? could you be rabbling? could he be rabbling? could we be rabbling? could you be rabbling? could they be rabbling?
Perfect
could I have rabbled? could you have rabbled? could he have rabbled? could we have rabbled? could you have rabbled? could they have rabbled?
V-ing perfect
could I have been rabbling? could you have been rabbling? could he have been rabbling? could we have been rabbling? could you have been rabbling? could they have been rabbling?
Interro-negative form
Simple form
could I not rabble? could you not rabble? could he not rabble? could we not rabble? could you not rabble? could they not rabble?
V-ing form
could I not be rabbling? could you not be rabbling? could he not be rabbling? could we not be rabbling? could you not be rabbling? could they not be rabbling?
Perfect
could I not have rabbled? could you not have rabbled? could he not have rabbled? could we not have rabbled? could you not have rabbled? could they not have rabbled?
V-ing perfect
could I not have been rabbling? could you not have been rabbling? could he not have been rabbling? could we not have been rabbling? could you not have been rabbling? could they not have been rabbling?