CME Group Exchange Spreads

[JJRR]

I am searching for ticker symbol for CME Group Exchange Spreads, specifically legacy Nymex/Comex.

I know that legacy CME products are listed as follows: ES Z2:ESH3

I know that legacy CBOT products are listed (same format) as follows: ZC Z2:ZCH3

Can anyone tell me what legacy Nymex or Comex products are?
CL F3:CLG3 does not work.
CL F3:CLG3=1 does not work
CL F3=1:CLG3 does not work
CL F3=1:CLG3=1 does not work.
Same for GC (Gold).

Thank you in advance.

[eostrom]

CL F3:CLG3 should be CL F3:CLG3=2

The gold Spreads should be as follows depending on what you are looking for

GC F3:GCV4
GC G3:GCM6=2
GC G3:GCM7=2
GC G3:GCV4
GC G3:GCZ3=2
GC G3:GCZ5=2
GC G3:GCZ6=2
GC G4:GCJ4=2
GC G4:GCV4
GC J3:GCV4
GC J4:GCM4=2
GC J4:GCV4
GC M3:GCV4
GC M4:GCV4
GC Q3:GCV4
GC Q4:GCV4
GC V3:GCV4
GC V4:GCM5
GC V4:GCM6
GC V4:GCM7
GC V4:GCZ4
GC V4:GCZ5
GC V4:GCZ6
GC V4:GCZ7
GC Z2:GCQ3=2
GC Z2:GCV4
GC Z2:GCZ7=2
GC Z2BF:GCZ4:GCZ6=2
GC Z3:GCV4
GC Z3BF:GCM4:GCZ4=2

[JJRR]

Eric,
Thank you for the quick reply.

CL F3:CLG3 should be CL F3:CLG3=2 does not work for me. I can provide screenshot if needed.

Regarding GC, some of these symbols work, some do not. The most liquid gold spread should be Feb 2013 (G3) and Apr 2013 (J3)?
GC G3:GCJ3 does not work for me.
GC G3:GCJ3=2 does not work for me.

Thank you.

[JJRR]

CL F3:CLG3=2 Still NOT working. Help?