This pattern can be traded in any timeframe. The example is shown with the help of chart of Punjab National Bank.
Elements of this pattern, Tail, 2 Legs, Back, Head which constitute a dragon are shown in the chart.
In this pattern, back may rise to touch bottom tail hook. After the second leg is in the place, buy breakout at the back. It may face a resistance at the top of the tail forming head.
It can be noticed that, this pattern is nothing but "W" bottom.