C1111233131211111211113313331333133313331313331333133313331333233111211   >>    C111123313121111121111331333133313331333131333133313331333133323311121   <<    C1111233131211111211113313331333133313331313331333133313331333233111213   >>      C1111233131211111211113313331333133313331313331333133313331333233111212   >>