D1313331322132333132333132312312323331323223313113313231323221111   >>    D131333132213233313233313231231232333132322331311331323132322111   <<    D1313331322132333132333132312312323331323223313113313231323221113   >>      D1313331322132333132333132312312323331323223313113313231323221112   >>