D131333132213233313233313131133132333132313223313231323221321311   >>    D13133313221323331323331313113313233313231322331323132322132131   <<    D131333132213233313233313131133132333132313223313231323221321313   >>      D131333132213233313233313131133132333132313223313231323221321312   >>