The pattern in the given sequence is that each row contains the letters from the previous row, and then adds a new letter. In the first row, "F L Y" is given. In the second row, "F L" is taken from the first row, and "LY" is added. In the third row, "FL" is taken from the second row, and "YF" is added. Therefore, the next row would take "FL" from the third row and add a new letter, resulting in "F L".