C1111233131211111211113313331333133313331333133313331333133313233113111   >>    C111123313121111121111331333133313331333133313331333133313331323311311   <<    C1111233131211111211113313331333133313331333133313331333133313233113113   >>      C1111233131211111211113313331333133313331333133313331333133313233113112   >>