I could disport you could disport he could disport we could disport you could disport they could disport
V-ing form
I could be disporting you could be disporting he could be disporting we could be disporting you could be disporting they could be disporting
Perfect
I could have disported you could have disported he could have disported we could have disported you could have disported they could have disported
V-ing perfect
I could have been disporting you could have been disporting he could have been disporting we could have been disporting you could have been disporting they could have been disporting
Negation
Simple form
I could not disport you could not disport he could not disport we could not disport you could not disport they could not disport
V-ing form
I could not be disporting you could not be disporting he could not be disporting we could not be disporting you could not be disporting they could not be disporting
Perfect
I could not have disported you could not have disported he could not have disported we could not have disported you could not have disported they could not have disported
V-ing perfect
I could not have been disporting you could not have been disporting he could not have been disporting we could not have been disporting you could not have been disporting they could not have been disporting
Interrogative form
Simple form
could I disport? could you disport? could he disport? could we disport? could you disport? could they disport?
V-ing form
could I be disporting? could you be disporting? could he be disporting? could we be disporting? could you be disporting? could they be disporting?
Perfect
could I have disported? could you have disported? could he have disported? could we have disported? could you have disported? could they have disported?
V-ing perfect
could I have been disporting? could you have been disporting? could he have been disporting? could we have been disporting? could you have been disporting? could they have been disporting?
Interro-negative form
Simple form
could I not disport? could you not disport? could he not disport? could we not disport? could you not disport? could they not disport?
V-ing form
could I not be disporting? could you not be disporting? could he not be disporting? could we not be disporting? could you not be disporting? could they not be disporting?
Perfect
could I not have disported? could you not have disported? could he not have disported? could we not have disported? could you not have disported? could they not have disported?
V-ing perfect
could I not have been disporting? could you not have been disporting? could he not have been disporting? could we not have been disporting? could you not have been disporting? could they not have been disporting?