C313212111133131211331333133313331333133311233133313113313221323233231   >>    C31321211113313121133133313331333133313331123313331311331322132323323   <<    C313212111133131211331333133313331333133311233133313113313221323233233   >>      C313212111133131211331333133313331333133311233133313113313221323233232   >>