C313212111133131211331333133313331333133311233133313221323233311   >>    C31321211113313121133133313331333133313331123313331322132323331   <<    C313212111133131211331333133313331333133311233133313221323233313   >>      C313212111133131211331333133313331333133311233133313221323233312   >>