C313212111133131211331333133313331333133311233133313221211111211111213223311   >>    C31321211113313121133133313331333133313331123313331322121111121111121322331   <<    C313212111133131211331333133313331333133311233133313221211111211111213223313   >>      C313212111133131211331333133313331333133311233133313221211111211111213223312   >>