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1 Erin is standing.
2 Attacker comes from behind to apply choke.
3 Erin grabs forearm and looks up while pulling forearm down.
4 Erin is still holding arm. She steps around attacker to get him off balance.
5 (Different angle.)
6 Leg is then hooked behind attacker's while pushing chest against arm to sweep him.
7 Attacker is swept and kept up on side while holding arm.
8 Foot steps over to apply armbar.
9 Armbar is applied and attacker's arm is quickly snapped!