I could prance you could prance she could prance we could prance you could prance they could prance
V-ing form
I could be prancing you could be prancing she could be prancing we could be prancing you could be prancing they could be prancing
Perfect
I could have pranced you could have pranced she could have pranced we could have pranced you could have pranced they could have pranced
V-ing perfect
I could have been prancing you could have been prancing she could have been prancing we could have been prancing you could have been prancing they could have been prancing
Negation
Simple form
I could not prance you could not prance she could not prance we could not prance you could not prance they could not prance
V-ing form
I could not be prancing you could not be prancing she could not be prancing we could not be prancing you could not be prancing they could not be prancing
Perfect
I could not have pranced you could not have pranced she could not have pranced we could not have pranced you could not have pranced they could not have pranced
V-ing perfect
I could not have been prancing you could not have been prancing she could not have been prancing we could not have been prancing you could not have been prancing they could not have been prancing
Interrogative form
Simple form
could I prance? could you prance? could she prance? could we prance? could you prance? could they prance?
V-ing form
could I be prancing? could you be prancing? could she be prancing? could we be prancing? could you be prancing? could they be prancing?
Perfect
could I have pranced? could you have pranced? could she have pranced? could we have pranced? could you have pranced? could they have pranced?
V-ing perfect
could I have been prancing? could you have been prancing? could she have been prancing? could we have been prancing? could you have been prancing? could they have been prancing?
Interro-negative form
Simple form
could I not prance? could you not prance? could she not prance? could we not prance? could you not prance? could they not prance?
V-ing form
could I not be prancing? could you not be prancing? could she not be prancing? could we not be prancing? could you not be prancing? could they not be prancing?
Perfect
could I not have pranced? could you not have pranced? could she not have pranced? could we not have pranced? could you not have pranced? could they not have pranced?
V-ing perfect
could I not have been prancing? could you not have been prancing? could she not have been prancing? could we not have been prancing? could you not have been prancing? could they not have been prancing?