To show you how to calculate the Distances filter for a Pick 2 number here a step by step example.
Step 1: Divide the number into separate digits: 90 => 9 0 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 9 to 0 = 9 0 to 9 = 9 Step 3: Combine the filters to a string: 9 9 = 99