C3123121111331312121111331333132313331333133313331123313231231221   >>    C312312111133131212111133133313231333133313331333112331323123122   <<    C3123121111331312121111331333132313331333133313331123313231231223   >>      C3123121111331312121111331333132313331333133313331123313231231222   >>