C1111233131211111211113313331333133313331333133313331333133313111211211311   >>    C111123313121111121111331333133313331333133313331333133313331311121121131   <<    C1111233131211111211113313331333133313331333133313331333133313111211211313   >>      C1111233131211111211113313331333133313331333133313331333133313111211211312   >>