There is a pattern I like to call the B Trap.
We know that Wave C's can be naughty. Wave C has a character of being spiky and harsh.
A Wave B is often, made of ABC waves. Sometimes, the C of B pokes out above/below Wave A of the B.
Visualize it here. This would be in "technical analysis" terms, a Failure Test or a Fakeout around 33500.
If that happens, we will get our Wave C up.