C31232233133313221211113313331333133313331212111133133313311233211331   >>    C3123223313331322121111331333133313331333121211113313331331123321133   <<    C31232233133313221211113313331333133313331212111133133313311233211333   >>      C31232233133313221211113313331333133313331212111133133313311233211332   >>