D131333132213233313233313131133132333132313223313233313232112312321   >>    D13133313221323331323331313113313233313231322331323331323211231232   <<    D131333132213233313233313131133132333132313223313233313232112312323   >>      D131333132213233313233313131133132333132313223313233313232112312322   >>