4-5 numbers in these 7 groups max=2 per group

04-19-32-39
06-22-36-46
08-11-18-33
12-25-38-49
13-26-37-44
21-27-34-43
24-29-36-46


As this method doesn't look to the low/high numbers, it's amazing that 10 numbers are <26 (low) and 18 numbers are>25 (high)!!