Water Sort Puzzle

Tap on a glass to select it, then press on another glass to pour the water. You can only pour water if the surface color of the first glass is the same as the top color of the second glass or if the second glass is vacant. Sort the colored water so that each glass contains only a single color. Finish all the glasses to move on to the next level. Use planning to prevent getting stuck with unmovable colors. Remember that some levels may need several steps to solve.