You have one bottle that has 1 liter in it, 1 bottle that have 2 liters in it, 1 bottle that have 3 liters in it, but your only allowed to use each bottle only once, and you have 1 five liter bottle that can only be used for refueling. You also happen to have a 20 liter bottle, and these are the only available moves:

1. Dump a bottle on the ground
2. Refuel your bucket
3. Pour the bucket into the other until it is full
4. Pour the water into the refuel bucket
5. Refuel your bucket

How can you get exactly 11 liters using the minimum number of moves?
(The bucket with 20 liters starts out full, and same with everything else)