Sure thing. I wrote it fast just to get it done. My apology. Here's my idea:
My take right now is that DEC ZC will go down. Therefore, I want to be short.
So, short under one of the following two conditions:
(1) Short 737 or higher; OR
(2) Stop, go short at the market if it drops below 720 before the 737 short happens.
OCO = One Cancels the Other (ie, do only one of the above 2, whichever comes first).
THEN, you need a stop buy to close out the short position.
If you get short at 737, place the stop at 755.
If you get short at 720 first, place the stop at 735.
ELECTED = your order gets filled.