diff --git a/Points cardinaux dans un parallelépipède rectangle .png b/Points cardinaux dans un parallelépipède rectangle .png
new file mode 100644
index 0000000..ad59f00
Binary files /dev/null and b/Points cardinaux dans un parallelépipède rectangle .png differ
diff --git a/src/graphics/buffers.c b/src/graphics/buffers.c
index 451d8d1..6c69091 100644
--- a/src/graphics/buffers.c
+++ b/src/graphics/buffers.c
@@ -390,18 +390,20 @@ static void draw_EW_ZA_SN_in_a_cubic_space(GLuint *lines_origin, int coeff, int
     /* Z-A   C +/- side_size x f                                              */
     /* E-W   C +/- side_size x side_size x f                                  */
 
-    //  coeff = step_z * space_Z + step_y * space_Y + step_x * space_X
+    // coeff = step_z * space_Z + step_y * space_Y + step_x * space_X
+    // for (int i = 0; i < space_X * space_Y * space_Z; i ++) draw_a_central_star (lines_origin, coeff + i * 6);
+    //                                               space_X = 9;   space_Y = 7;   space_Z = 11;
     int s = space_X * space_Y * space_Z / 2;
     int z = space_Z / 2;
     int y = z * space_Y;
     int x = y * space_X;
 
-    draw_a_central_star (lines_origin, coeff + (s + x) * 6 + 1); // W
-    draw_a_central_star (lines_origin, coeff + (s - x) * 6 + 1); // E
-    draw_a_central_star (lines_origin, coeff + (s + y) * 6 + 1); // Z
-    draw_a_central_star (lines_origin, coeff + (s - y) * 6 + 1); // A
-    draw_a_central_star (lines_origin, coeff + (s + z) * 6 + 1); // S
-    draw_a_central_star (lines_origin, coeff + (s - z) * 6 + 1); // N
+    draw_a_central_star (lines_origin, coeff + (s + x - 7) * 6 + 1); // W
+    draw_a_central_star (lines_origin, coeff + (s - x + 7) * 6 + 1); // E
+    draw_a_central_star (lines_origin, coeff + (s + y - 2) * 6 + 1); // Z
+    draw_a_central_star (lines_origin, coeff + (s - y + 2) * 6 + 1); // A
+    draw_a_central_star (lines_origin, coeff + (s + z + 0) * 6 + 1); // S
+    draw_a_central_star (lines_origin, coeff + (s - z - 0) * 6 + 1); // N
 }
 
 static int draw_a_central_central_star(GLuint *lines_origin, int coeff, int volume)
@@ -666,3 +668,4 @@ bool compute_space(int space_X, int space_Y, int space_Z,
 /*     draw_line (lines_origin, s + 3, s + 10 + site % 2); */
 /* } */
 
+
diff --git a/src/graphics/graphics.c b/src/graphics/graphics.c
index fe49424..32f427d 100644
--- a/src/graphics/graphics.c
+++ b/src/graphics/graphics.c
@@ -551,8 +551,8 @@ GLuint arrows[] = {
 static void get_model_data_and_user_preferences(){
 
     space_X = 9;    //   0 < space_X    assert TODO
-    space_Y = 9;    //   0 < space_Y    assert TODO
-    space_Z = 9;    //   0 < space_Z    assert TODO
+    space_Y = 7;    //   0 < space_Y    assert TODO
+    space_Z = 11;    //   0 < space_Z    assert TODO
     cubes_nb = space_X * space_Y * space_Z;
     pref_show_grid = 1;             //  0,   1,   2, 3, 5,   6, 10, 15,   30,    etc.
                                     // xyz,  0,   x, y, z,  xy, xz, yz,  xyz   (repeat)