Wyckoff trading method, page-713

Yes Beany, the first bar is a potential upthrust. The higher volume will usually make it more powerful if it confirms. And the next bar lower offers some confirmation of the weakness.
Then the second bar is a good attempt at a shakeout, and the third was a test bar (which would be confirmed with an upbar in response).

A previous mentor used to have a saying "a test and a shakeout equals a breakout",
although this could better be explained as "a test and a shakeout, or a shakeout and a test, offer an improved chance that price will at least attempt to breakout"
sadly the better explanation doesn't quite roll off the tongue as well.......

FWIW, here is the chart to show a couple more bars of what happened next.....
In essence, supply came in (and caused an upthrust type bar), so price pulled back and attempted to shakeout the sellers, then it tested the market for supply (and found supply was now low), so in response it accelerated higher.

Or another way to look at this situation, the upthrust was a sign of potential weakness entering the market, and the shakeout (a sign of potential strength) attempted to balance the weakness, and bring the chart's influence back to neutral. Then the test was to confirm the balance was back in order, and price was now free to carry on.....which it did....at least briefly.

This all looks very nice, but just be aware that in these small cap stocks, serious supply can just appear much more unexpectedly than in big large liquid markets.
In this example, supply did come in again, and continued to cause some more difficulties above 25cps.