I could scramble you could scramble he could scramble we could scramble you could scramble they could scramble
V-ing form
I could be scrambling you could be scrambling he could be scrambling we could be scrambling you could be scrambling they could be scrambling
Perfect
I could have scrambled you could have scrambled he could have scrambled we could have scrambled you could have scrambled they could have scrambled
V-ing perfect
I could have been scrambling you could have been scrambling he could have been scrambling we could have been scrambling you could have been scrambling they could have been scrambling
Negation
Simple form
I could not scramble you could not scramble he could not scramble we could not scramble you could not scramble they could not scramble
V-ing form
I could not be scrambling you could not be scrambling he could not be scrambling we could not be scrambling you could not be scrambling they could not be scrambling
Perfect
I could not have scrambled you could not have scrambled he could not have scrambled we could not have scrambled you could not have scrambled they could not have scrambled
V-ing perfect
I could not have been scrambling you could not have been scrambling he could not have been scrambling we could not have been scrambling you could not have been scrambling they could not have been scrambling
Interrogative form
Simple form
could I scramble? could you scramble? could he scramble? could we scramble? could you scramble? could they scramble?
V-ing form
could I be scrambling? could you be scrambling? could he be scrambling? could we be scrambling? could you be scrambling? could they be scrambling?
Perfect
could I have scrambled? could you have scrambled? could he have scrambled? could we have scrambled? could you have scrambled? could they have scrambled?
V-ing perfect
could I have been scrambling? could you have been scrambling? could he have been scrambling? could we have been scrambling? could you have been scrambling? could they have been scrambling?
Interro-negative form
Simple form
could I not scramble? could you not scramble? could he not scramble? could we not scramble? could you not scramble? could they not scramble?
V-ing form
could I not be scrambling? could you not be scrambling? could he not be scrambling? could we not be scrambling? could you not be scrambling? could they not be scrambling?
Perfect
could I not have scrambled? could you not have scrambled? could he not have scrambled? could we not have scrambled? could you not have scrambled? could they not have scrambled?
V-ing perfect
could I not have been scrambling? could you not have been scrambling? could he not have been scrambling? could we not have been scrambling? could you not have been scrambling? could they not have been scrambling?