using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World!");

            var timestring = new string[] { "1 hr 30 min", "1 hr","30 min", "1hr30min" };

            TimeSpan result;

            foreach (var time in timestring)

            {

                bool t = TimeSpan.TryParseExact(time.Replace(" ",""), new string[] { @"h\h\rmm\m\i\n", @"h\h\r", @"mm\m\i\n" }, null, System.Globalization.TimeSpanStyles.None, out result);

                Console.WriteLine(result);

            }

    }

}