L.C. Left center?

You got it.

Patience was actually my first G&S. My parents has a record album of it, back in the 1940s: ten 78-rpm records, both sides, in a stack so that side 20 was on the back of Side 1, 19/2, 18/3, etc, and when all the first sides had been dropped to the turntable in order and played, you just flipped over the whole stack and played the other sides. I never had the opportunity to perform it, though.