using static System.Console;

public class Program {

    public static void Main() {

        string nullString = null;

        string emptyString = "";

        string spaceString = "    ";

        string tabString = "\t";

        string newlineString = "\n";

        string nonEmptyString = "texto";

        WriteLine(string.IsNullOrEmpty(nullString));

        WriteLine(string.IsNullOrEmpty(emptyString));

        WriteLine(string.IsNullOrEmpty(spaceString));

        WriteLine(string.IsNullOrEmpty(tabString));

        WriteLine(string.IsNullOrEmpty(newlineString));

        WriteLine(string.IsNullOrEmpty(nonEmptyString));

        WriteLine();

        WriteLine(string.IsNullOrWhiteSpace(nullString));

        WriteLine(string.IsNullOrWhiteSpace(emptyString));

        WriteLine(string.IsNullOrWhiteSpace(spaceString));

        WriteLine(string.IsNullOrWhiteSpace(tabString));

        WriteLine(string.IsNullOrWhiteSpace(newlineString));

        WriteLine(string.IsNullOrWhiteSpace(nonEmptyString));

    }

}