I'm so confused about the rules lately.
I was recently in a 12-6 elbopw debate here on sherdog. We discovered that 12-6 elbows are only the elbows where your hand travels from 12-6. If there is an arc in the delivery of the strikes, it's completely legal.
That makes the 12-6 elbow rule the worst rule in all of sports because it only covers a VERY narrow range of elbow strikes. A downward, arching elbow strike is NO LESS violent, perhaps even moreso, than a 12-6 elbow strike but it is legal while the 12-6 is not.