C1111233131211111211113313331333133313221211113313331333133313233231322231   >>    C111123313121111121111331333133313331322121111331333133313331323323132223   <<    C1111233131211111211113313331333133313221211113313331333133313233231322233   >>      C1111233131211111211113313331333133313221211113313331333133313233231322232   >>