In the scene, there are 4 ball clusters: red cluster A has 5 balls, and there are other clusters with different numbers of balls. The global TOTAL label shows the sum 25. Control the red cluster A to absorb other clusters. You can only absorb clusters that are smaller than the red cluster. Find the correct sequence to absorb all clusters step by step until all balls become red. Only modify what the task requires; keep the background and any other element unchanged. Output one image after each merge event, showing the state after the red cluster absorbs a smaller cluster.