Duplicated values from Enum (rock paper scissors)

I'm trying to make a rock, paper, scissors application through C#. This part is supposed to pick a random value from enum (rock/paper/scissors), and it does the job but it picks random value twice. What is the problem?

Random random = new Random();
Type type = typeof(ComInput);

Array values = type.GetEnumValues();
//Array values = Enum.GetValues(type):

for (int i = 0; i < 2; ++i)
{
    int index = random.Next(values.Length);
    ComInput value = (ComInput)values.GetValue(index);

    Console.WriteLine("제 선택은");
    //Console.ReadLine();
    Console.WriteLine(value);
}