On whistle O1 makes pass to Triangle 1 and crosses through the top of the circles with O2. Triangle 1 cuts up ice and makes breakout pass to O1 who passes to Triangle 2 and crosses ice again with O2. Triangle 1 skates up ice to Centre and immediately back peddles for incoming 2-on-1. Triangle 2 makes breakout pass to O1 or O2.
Repeat drill with 2-on-1 finishing in the opposite direction (if you have two goalies).