C313212111133131211331333133313232233132313231211113313232233321   >>    C31321211113313121133133313331323223313231323121111331323223332   <<    C313212111133131211331333133313232233132313231211113313232233323   >>      C313212111133131211331333133313232233132313231211113313232233322   >>