More Brain

~1 gallon-  Fill the 9 gallon bucket.  Pour 4 gallons into the 4 gallon bucket and pour it out.  You now have 5 gallons in the 9 gallon bucket.  Pour 4 gallons into the 4 gallon bucket and pour it out.  You now have 1 gallon in the 9 gallon bucket.

~2 gallons- 

~3 gallons- fill up the 4 gallon bucket and pour it into the 3 gallons in the 4 gallon bucket 

~4 gallons- fill up the 4 gallon bucket 

~5 gallons- fill the 9 gallon bucket. Use the 9 gallon bucket and fill the 4 gallon bucket, pour the 4 gallon bucket out and u will have 5 gallons in the 9 gallon bucket left.

~6 gallons-  Fill the 9 gallon bucket.  Pour 4 gallons into the 4 gallon bucket and pour it out.  You now have 5 gallons in the 9 gallon bucket.  Pour 4 gallons into the 4 gallon bucket and pour it out.   Pour that gallon in the 4 gallon bucket and fill up the 9 gallon bucket again pour the rest of that into the 4 gallon bucket then you will have 6 gallons in the 9 gallon bucket.

~7 gallons-

~8 gallons- fill the 4 gallon bucket up and fill the 9 gallon bucket up with that water twice.

~9 gallons- fill the 9 gallon bucket up

~10 gallons- Fill the 9 gallon bucket.  Pour 4 gallons into the 4 gallon bucket and pour it out.  You now have 5 gallons in the 9 gallon bucket.  Pour the 1 gallon into the 4 gallon bucket then fill up the 9 gallon bucket and you have 10.

~12 gallons-  Fill the 4 gallon bucket up and pour it into the 9 gallon bucket twice. 

~13 gallons- Fill both the 4 gallon and 9 gallon bucket up.