C11112331333132311331333133313231333131133131211113313133313113322333121   >>    C1111233133313231133133313331323133313113313121111331313331311332233312   <<    C11112331333132311331333133313231333131133131211113313133313113322333123   >>      C11112331333132311331333133313231333131133131211113313133313113322333122   >>