D13133313221323331323331323123123233313232233131133132333132313311321   >>    D1313331322132333132333132312312323331323223313113313233313231331132   <<    D13133313221323331323331323123123233313232233131133132333132313311323   >>      D13133313221323331323331323123123233313232233131133132333132313311322   >>