How this codes work, especially on "word+=letters.pop()" and "word+=letters.Peek()"? Anyone can help?

Question

using System;
using System.Collections.Generic;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
string word =" ";

Stack<string> letters = new Stack<string>();

letters.Push("o");
letters.Push("l");
letters.Push("e");
letters.Push("h");
word+=letters.Pop();
word+=letters.Pop();
word+=letters.Peek();
word+=letters.Pop();
word+=letters.Pop();

Console.Write(word);

}
}
}

Answer 1

So first "o" is pushed into the stack so it is at index 0 in stack and then "l" is pushed so it is at index 1 and so on
It's now

h
e
l
o
now pop returns and remove the topmost element in stack

word=word+letters.pop()
Is
word=""+h
word="h" now
and only these letters are left in stack
e
l
o

then
word="h"+ letters.pop()
word="h"+"e"
word="he"

so stack now contains
l
o

and now peek method doesn't removes the element
It just returns it
so
string word will be now
"hel"
while stack still contains
l
o

Answer 2

thanks for the clarification 👍