How to pass level 2-20?

Level Normal 20 (2-20) is quite difficult, but with a little planning, and these instructions you'll have it completed.

First of all fill the tube to the far right with 4 green balls. Then the second tube to the left with 4 red balls.

It should be looking something like as follows:

Level 2-20

Next clear the 2nd tube on the right by removing the yellow and blue balls

Now fill it back up with the three yellow balls, and move the two blue balls to the middle tube and I'm sure you can do the last couple of steps from there!

Level 2-20