What are the three types of doji?

The three main types of doji are the long-legged doji, the gravestone doji, and the dragonfly doji, each defined by where the open-close line sits relative to the candle's range. The long-legged doji is a neutral pattern where the opening and closing prices are near the center of the candlestick, with roughly equal-length shadows above and below. The gravestone doji has a long upper shadow with no lower shadow, a bearish reversal signal at resistance, while the dragonfly has a long lower shadow with no upper shadow, a bullish reversal signal at support