C11111333133313232233133313331333131123313221211113313113313231333131121123311   >>    C1111133313331323223313331333133313112331322121111331311331323133313112112331   <<    C11111333133313232233133313331333131123313221211113313113313231333131121123313   >>      C11111333133313232233133313331333131123313221211113313113313231333131121123312   >>