C11111211113313112113313331333133313331333131211113313331311331322333123121   >>    C1111121111331311211331333133313331333133313121111331333131133132233312312   <<    C11111211113313112113313331333133313331333131211113313331311331322333123123   >>      C11111211113313112113313331333133313331333131211113313331311331322333123122   >>