A wizard has given you 4 lucky beans. He has given you a mission to place them on an abacus in as many different ways as possible in order to create as many different numbers as possible. For example, I could place 2 beans on the tens and 2 beans on the ones. What number have I made? If you answered 22 you are correct. Can you find all the different numbers and earn good luck? Show me your working out and explain whether you have found a strategy that helps to prove you have found all of the possible answers.