| 177, 377, 707, 717, 737, 767, 771, 778, 779, 3777, 4777, 5777, 7277, 7377, 7737, 7747, 7771, 7773, 7778, 7779, 7787, 7977, 8777, 9777, 17777, 37777, 57777, 70777, 77177, 77277, 77677, 77757, 77767, 77771, 277777, 577777, 677777, 707777, 737777
(list; graph; listen)
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