C1111233131211111211113313331333133313331333133313331333133313233233213331   >>    C111123313121111121111331333133313331333133313331333133313331323323321333   <<    C1111233131211111211113313331333133313331333133313331333133313233233213333   >>      C1111233131211111211113313331333133313331333133313331333133313233233213332   >>