Using just the filters you used, you would have used 643 numbers on group 77. Going back to the very beginning group pattern 77 is by far the most popular, having hit 7 times. Also groups in the 70s tend to hit every 5 weeks or so.
There have been 32 group winners in the 70s dating back to 5-2-17. Here the most popular by group in the 70s
70 (1)
71 (0)
72 (1)
73 (4)
74 (5)
75 (0)
76 (5)
77 (7)
78 (5)
79 (4)
Also 2 consecutive numbers dont really happen a lot. So removing them would whittle down numbers even more. 3,4,5 consecutive numbers may hit once or twice all year.