D131333132213233313233313131133132333132313223313113313232323221   >>    D13133313221323331323331313113313233313231322331311331323232322   <<    D131333132213233313233313131133132333132313223313113313232323223   >>      D131333132213233313233313131133132333132313223313113313232323222   >>