A 1-2-3-4 reversal chart pattern is build up of 4 definable points, known as point 1, 2 , 3 and 4. A typical 1-2-3-4 chart pattern is best traded after a strong currency pair up - or downtrend and can be defined by an easy set of trading rules. A trader can confirm the reversal trade using a technical indicator such as DMI or MACD.