Also pull up the flight with Amadeus (sp) - you'll be able to see R as well.
Expertflyer (which I think uses Sabre) returns these results:
- CO812 A6 D6 Z6 Y9 H9 K9 N9 B9 O9 V5 U9 Q0 I9 S0 W8 T0 X2 L0
- CO1672 A6 D6 Z6 Y9 H9 K9 N9 B9 O9 V9 U9 Q9 I9 S9 W9 T9 X9 L9
Expertflyer's seat maps show for the outbound 11 Y seats open (all in the premium section) as well as a completely open F (minus the airport reserved seat). For the return ~ 21 seats open in Y and F as completely open (minus the airport reserved seat).