D33132233232132333132313111123313232233133313232213231323221211   >>    D3313223323213233313231311112331323223313331323221323132322121   <<    D33132233232132333132313111123313232233133313232213231323221213   >>      D33132233232132333132313111123313232233133313232213231323221212   >>