Bollinger group is a very good signal that I use from my request to trade. its development is the best way to get concepts about these patterns. when the range of costs contacting the group is higher then the cost tendency will shift to the down term and this is a new pattern. Using CCI is a good choice that tells us about the factors of access and stopping to business. and bollinger bands are very good indicators that I use from my trading requests. Envelope formation is a good way to get ideas about trends. when the price line touches the upper band then the price trend will move to the word down and this is a new trend. using CCI is a good option that says about entry and exit points to trade.