C313212111133131211331333133313232233132313231211113313221311211   >>    C31321211113313121133133313331323223313231323121111331322131121   <<    C313212111133131211331333133313232233132313231211113313221311213   >>      C313212111133131211331333133313232233132313231211113313221311212   >>