D131333132213233313233313131133132333132313223313233313123232212331   >>    D13133313221323331323331313113313233313231322331323331312323221233   <<    D131333132213233313233313131133132333132313223313233313123232212333   >>      D131333132213233313233313131133132333132313223313233313123232212332   >>