C313212111133131211331333133313331333133311233133313223313231323311321   >>    C31321211113313121133133313331333133313331123313331322331323132331132   <<    C313212111133131211331333133313331333133311233133313223313231323311323   >>      C313212111133131211331333133313331333133311233133313223313231323311322   >>