C3123121111331312121111331333133313331333121333133313331211111132132212211   >>    C312312111133131212111133133313331333133312133313331333121111113213221221   <<    C3123121111331312121111331333133313331333121333133313331211111132132212213   >>      C3123121111331312121111331333133313331333121333133313331211111132132212212   >>