Group 1 - The article discusses the concept of "long-legged" candlestick patterns and their potential as buy signals, emphasizing the need for historical data backtesting to validate their effectiveness [1] - It draws a parallel between the "long-legged" pattern and Wyckoff's Spring concept, suggesting that both require consideration of candlestick shape, trading volume, and market context [1] - The article provides a code snippet for identifying specific candlestick patterns and volume characteristics, indicating a structured approach to quantifying these signals [1] Group 2 - The article mentions the potential for a surge in stocks exhibiting long-legged candlestick structures or blue-green diamond signals as the market experiences a pullback [4] - It references previous discussions on quantifying volume characteristics related to accumulation, indicating a framework for analyzing stock behavior [2] - The author acknowledges the challenges of defining left-side signals, suggesting that the exploration of these concepts is ongoing and invites input from experts in the field [2]