D131333132213233313233313131133132333132313223313231323221121311   >>    D13133313221323331323331313113313233313231322331323132322112131   <<    D131333132213233313233313131133132333132313223313231323221121313   >>      D131333132213233313233313131133132333132313223313231323221121312   >>