D131333132213233313233313131133132333132313223313233313223312321   >>    D13133313221323331323331313113313233313231322331323331322331232   <<    D131333132213233313233313131133132333132313223313233313223312323   >>      D131333132213233313233313131133132333132313223313233313223312322   >>