C1111233131211111211113313331333133313331333133313331333133313111213231   >>    C111123313121111121111331333133313331333133313331333133313331311121323   <<    C1111233131211111211113313331333133313331333133313331333133313111213233   >>      C1111233131211111211113313331333133313331333133313331333133313111213232   >>