- case 1: w = 11, h = 11; break;
- case 2: w = 15, h = 15; break;
- case 3: w = 19, h = 19; break;
+ case 1: w = 9, h = 9; break;
+ case 2: w = 11, h = 11; break;
+ case 3: w = 13, h = 13; break;
+ case 4: w = 15, h = 15; break;
+#ifndef SLOW_SYSTEM
+ case 5: w = 17, h = 17; break;
+ case 6: w = 19, h = 19; break;
+#endif