I could cabin you could cabin he could cabin we could cabin you could cabin they could cabin
V-ing form
I could be cabining you could be cabining he could be cabining we could be cabining you could be cabining they could be cabining
Perfect
I could have cabined you could have cabined he could have cabined we could have cabined you could have cabined they could have cabined
V-ing perfect
I could have been cabining you could have been cabining he could have been cabining we could have been cabining you could have been cabining they could have been cabining
Negation
Simple form
I could not cabin you could not cabin he could not cabin we could not cabin you could not cabin they could not cabin
V-ing form
I could not be cabining you could not be cabining he could not be cabining we could not be cabining you could not be cabining they could not be cabining
Perfect
I could not have cabined you could not have cabined he could not have cabined we could not have cabined you could not have cabined they could not have cabined
V-ing perfect
I could not have been cabining you could not have been cabining he could not have been cabining we could not have been cabining you could not have been cabining they could not have been cabining
Interrogative form
Simple form
could I cabin? could you cabin? could he cabin? could we cabin? could you cabin? could they cabin?
V-ing form
could I be cabining? could you be cabining? could he be cabining? could we be cabining? could you be cabining? could they be cabining?
Perfect
could I have cabined? could you have cabined? could he have cabined? could we have cabined? could you have cabined? could they have cabined?
V-ing perfect
could I have been cabining? could you have been cabining? could he have been cabining? could we have been cabining? could you have been cabining? could they have been cabining?
Interro-negative form
Simple form
could I not cabin? could you not cabin? could he not cabin? could we not cabin? could you not cabin? could they not cabin?
V-ing form
could I not be cabining? could you not be cabining? could he not be cabining? could we not be cabining? could you not be cabining? could they not be cabining?
Perfect
could I not have cabined? could you not have cabined? could he not have cabined? could we not have cabined? could you not have cabined? could they not have cabined?
V-ing perfect
could I not have been cabining? could you not have been cabining? could he not have been cabining? could we not have been cabining? could you not have been cabining? could they not have been cabining?