SubsetPosition¶ Finds positions of all subsets matching a pattern. $ wo 'SubsetPosition[{1, 2, 3, 4, 5}, {_, _}]' {{1, 2}, {1, 3}, {1, 4}, {1, 5}, {2, 3}, {2, 4}, {2, 5}, {3, 4}, {3, 5}, {4, 5}}