Another series puzzle

[WDWHound]

1 11 21 11 12 31 12 21 12 13 __ __ __

What are the next 3 numbers?

There is a trick to this. The solution is not a mathematical series.

(note, This was taken from a Puzzle in "Star Wars. Knights of the Old Republic", an outstanding video game)

 

[gr8tpanther]

that would be my answer to that one!

 

[Boo'sMom]

Oh I know this one....we've had it as a daily riddle once or twice....