Basic grids - Rotational Symmetry (5)
R(24,5)-hmr#1468
R(24,6)-hmr#1124
R(24,6)-hmr#1230
R(24,6)-hmr#1253
R(24,6)-hmr#1452
R(24,6)-hmr#1455
R(24,6)-hmr#1458
R(24,6)-hmr#1459
R(24,8)-hmr#1241