I could castaway you could castaway she could castaway we could castaway you could castaway they could castaway
V-ing form
I could be castawaying you could be castawaying she could be castawaying we could be castawaying you could be castawaying they could be castawaying
Perfect
I could have castawayed you could have castawayed she could have castawayed we could have castawayed you could have castawayed they could have castawayed
V-ing perfect
I could have been castawaying you could have been castawaying she could have been castawaying we could have been castawaying you could have been castawaying they could have been castawaying
Negation
Simple form
I could not castaway you could not castaway she could not castaway we could not castaway you could not castaway they could not castaway
V-ing form
I could not be castawaying you could not be castawaying she could not be castawaying we could not be castawaying you could not be castawaying they could not be castawaying
Perfect
I could not have castawayed you could not have castawayed she could not have castawayed we could not have castawayed you could not have castawayed they could not have castawayed
V-ing perfect
I could not have been castawaying you could not have been castawaying she could not have been castawaying we could not have been castawaying you could not have been castawaying they could not have been castawaying
Interrogative form
Simple form
could I castaway? could you castaway? could she castaway? could we castaway? could you castaway? could they castaway?
V-ing form
could I be castawaying? could you be castawaying? could she be castawaying? could we be castawaying? could you be castawaying? could they be castawaying?
Perfect
could I have castawayed? could you have castawayed? could she have castawayed? could we have castawayed? could you have castawayed? could they have castawayed?
V-ing perfect
could I have been castawaying? could you have been castawaying? could she have been castawaying? could we have been castawaying? could you have been castawaying? could they have been castawaying?
Interro-negative form
Simple form
could I not castaway? could you not castaway? could she not castaway? could we not castaway? could you not castaway? could they not castaway?
V-ing form
could I not be castawaying? could you not be castawaying? could she not be castawaying? could we not be castawaying? could you not be castawaying? could they not be castawaying?
Perfect
could I not have castawayed? could you not have castawayed? could she not have castawayed? could we not have castawayed? could you not have castawayed? could they not have castawayed?
V-ing perfect
could I not have been castawaying? could you not have been castawaying? could she not have been castawaying? could we not have been castawaying? could you not have been castawaying? could they not have been castawaying?