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