bmehmet I'm not sure how to ask this.. or verbalize it... I've been practicing using the H/L and O/E patterns of previous draws... when I don't win, I look back and see what it was that prevented the win (learn from mistakes)... I am noticing that If I want to remove a HL pattern from the front pair, and I remove all combos with front HL patterns... then the numbers that are involved in the back end of those patterns are also eliminated. I have been manually eliminating patterns with the back pair, front pair, middle pair filters. Same with Odd & Evens. Are you saying that you are creating a filter to remove H/L , O/E patterns strictly from front pairs, back pairs and middle pairs ?