Obviously there are many 1 yuan, 5 cents and 1 cent coins in the piggy bank. If you take out 2 coins each time, how many different amounts of money can you get in total?
明明的储蓄罐里有1元、5角和1角的硬币许多个，如果每次拿出2个，一共可以拿到几种不用的钱数？
<result>6</result>