1f17ff contains 2102112121021121221321421521621721821921a21b21c21d21e21f221321421521621721821921a21b21c21d21e21f21 contains 1f01f11f1f01f11f21f31f41f51f61f71f81f91fa1fb1fc1fd1fe1ff21f31f41f51f61f71f81f91fa1fb1fc1fd1fe1ff1f contains 2f02f12f22f2f02f12f22f32f42f52f62f72f82f92fa2fb2fc2fd2fe2ff32f42f52f62f72f82f92fa2fb2fc2fd2fe2ff2f
contains 2102112121021121221321421521621721821921a21b21c21d21e21f221321421521621721821921a21b21c21d21e21f21
contains 1f01f11f1f01f11f21f31f41f51f61f71f81f91fa1fb1fc1fd1fe1ff21f31f41f51f61f71f81f91fa1fb1fc1fd1fe1ff1f
contains 2f02f12f22f2f02f12f22f32f42f52f62f72f82f92fa2fb2fc2fd2fe2ff32f42f52f62f72f82f92fa2fb2fc2fd2fe2ff2f