// Full list of genus representatives downloaded from the LMFDB on 31 May 2024. data := [\ Matrix([[2, -1, 1, 0, 0, 0, 0, 0], [-1, 2, -1, 0, 0, -1, 1, -1], [1, -1, 2, 0, 0, 1, -1, 1], [0, 0, 0, 4, 0, 2, -2, 2], [0, 0, 0, 0, 4, 2, -2, 2], [0, -1, 1, 2, 2, 6, -4, 4], [0, 1, -1, -2, -2, -4, 6, -2], [0, -1, 1, 2, 2, 4, -2, 6]])];