- * - base_y, base_x + 11
- * - base_y + 3, base_x + 1
- * - base_y + 6, base_x + 1
- * - base_y + 3, base_x + 6
- * - base_y + 3, base_x + 11
- * - base_y + 6, base_x + 6
- * - base_y + 6, base_x + 11
- * The added y value can be {0, 3, 6}
- * The added x value can be {1, 6, 11} */
-
-void print_x(int y, int x) {
+ * - base_y, base_x + 11
+ * - base_y + 3, base_x + 1
+ * - base_y + 6, base_x + 1
+ * - base_y + 3, base_x + 6
+ * - base_y + 3, base_x + 11
+ * - base_y + 6, base_x + 6
+ * - base_y + 6, base_x + 11
+ * The added (y, x) couple values can be {0, 3, 6}x{1, 6, 11}
+ */
+
+static void print_x(int y, int x) {
+