C313212111133131211331333133313331333133311233133313221211111211111223323321   >>    C31321211113313121133133313331333133313331123313331322121111121111122332332   <<    C313212111133131211331333133313331333133311233133313221211111211111223323323   >>      C313212111133131211331333133313331333133311233133313221211111211111223323322   >>