C313212111133131211331333133313331333133313231333133313331333133313233123313311   >>    C31321211113313121133133313331333133313331323133313331333133313331323312331331   <<    C313212111133131211331333133313331333133313231333133313331333133313233123313313   >>      C313212111133131211331333133313331333133313231333133313331333133313233123313312   >>