{ 1 => [ [26, 27, 28], [16, 17, 18], [6, 7, 8], [1, 2, 3] ], 2 => [ [27, 28, 29], [17, 18, 19], [7, 8, 9], [2, 3, 4], ], 3 => [ [28, 29, 30], [18, 19, 20], [8, 9, 10], [3, 4, 5] ], 4 => [ [29, 30, 31], [19, 20, 21], [9, 10, 11], [4, 5, 6] ], }