increment filter example

Hi i'm new in rapidminer and have tried the possible ways to achieve my result but i'm having a hard time achieving it. How can I increment filter example? I'm working on a data set that gets the top 3 items per month. What i got to do is loop through the example set but my example filter is always in the month 1 only.

My example set

item id, month, sales

1, jan, 25

2 jan, 45

3, jan, 56

4, jan, 36

Expected result

3, jan, 56

2, jan, 45

4, jan, 36 and so on..