Long legged doji

"Long-legged doji candles are deemed to be most significant when they occur during a strong uptrend or downtrend.
The long-legged doji suggests that the forces of supply and demand are nearing equilibrium and that a trend reversal may occur.
This is because equilibrium or indecision means that the price is no longer pushing in the direction it once was. Sentiment may be changing"

Source : Investopedia