C1111233131211111211113313331333133313331333133313331311331323133313132333121   >>    C111123313121111121111331333133313331333133313331333131133132313331313233312   <<    C1111233131211111211113313331333133313331333133313331311331323133313132333123   >>      C1111233131211111211113313331333133313331333133313331311331323133313132333122   >>