C313212111133131211331333133313331333133311233133313113313232322311   >>    C31321211113313121133133313331333133313331123313331311331323232231   <<    C313212111133131211331333133313331333133311233133313113313232322313   >>      C313212111133131211331333133313331333133311233133313113313232322312   >>