Matrix M [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13] [1,] 1 1 0 1 1 1 0 0 1 0 0 0 1 [2,] 0 0 1 1 0 1 1 1 1 0 1 0 0 [3,] 0 0 1 1 0 0 1 0 0 0 1 1 0 [4,] 0 0 0 0 1 1 0 0 1 0 1 0 0 [5,] 0 0 0 0 0 1 1 0 1 1 1 0 0 [6,] 0 0 0 0 0 1 1 1 1 1 1 1 0 [7,] 0 0 0 0 0 0 1 0 1 1 0 1 1 [8,] 0 0 0 0 0 0 0 1 0 1 0 0 1 [9,] 0 0 0 0 0 0 0 0 1 0 0 0 1 [10,] 0 0 0 0 0 0 0 0 0 1 0 0 0 [11,] 0 0 0 0 0 0 0 0 0 0 1 0 0 [12,] 0 0 0 0 0 0 0 0 0 0 0 0 1 [13,] 0 0 0 0 0 0 0 0 0 0 0 0 0 [14,] 0 0 0 0 0 0 0 0 0 0 0 0 0 [15,] 0 0 0 0 0 0 0 0 0 0 0 0 0 [16,] 0 0 0 0 0 0 0 0 0 0 0 0 0 [17,] 0 0 0 0 0 0 0 0 0 0 0 0 0 [18,] 0 0 0 0 0 0 0 0 0 0 0 0 0 [19,] 0 0 0 0 0 0 0 0 0 0 0 0 0 [20,] 0 0 0 0 0 0 0 0 0 0 0 0 0 [,14] [,15] [,16] [,17] [,18] [,19] [,20] [1,] 0 1 0 1 1 0 1 [2,] 1 1 0 1 1 1 0 [3,] 0 0 0 0 0 0 1 [4,] 0 0 1 1 1 0 0 [5,] 1 0 1 1 1 1 1 [6,] 0 1 1 1 0 1 1 [7,] 1 0 1 1 1 1 1 [8,] 1 1 0 1 1 1 1 [9,] 1 0 0 0 0 1 1 [10,] 1 1 1 0 0 0 1 [11,] 1 0 0 1 0 1 1 [12,] 1 0 1 1 0 0 0 [13,] 1 1 0 0 1 1 1 [14,] 1 1 1 1 1 1 1 [15,] 0 0 1 1 0 0 0 [16,] 0 0 1 1 1 1 1 [17,] 0 0 0 0 1 1 0 [18,] 0 0 0 0 1 0 0 [19,] 0 0 0 0 0 1 1 [20,] 0 0 0 0 0 0 1