C313212111133131211331333133313331333133311233133313232212123311   >>    C31321211113313121133133313331333133313331123313331323221212331   <<    C313212111133131211331333133313331333133311233133313232212123313   >>      C313212111133131211331333133313331333133311233133313232212123312   >>