C3132121111133313233121111331333133313331333133313331323133313233211311   >>    C313212111113331323312111133133313331333133313331333132313331323321131   <<    C3132121111133313233121111331333133313331333133313331323133313233211313   >>      C3132121111133313233121111331333133313331333133313331323133313233211312   >>