If statement in python not printing

Question

I am working on an assignment for school, and this program is SUPER easy, but my if statement isn't working properly. Does anybody know why? Here is the code:

letter = input("Name one of the most common letters in wheel of fortune puzzles: ")

if letter == "r":
    print(letter, "is one of the most common letters!")
if letter == "s":
    print(letter, "is one of the most common letters!")
if letter == "t":
    print(letter, "is one of the most common letters!")
if letter == "l":
    print(letter, "is one of the most common letters!")
if letter == "n":
    print(letter, "is one of the most common letters!")
if letter == "e":
    print(letter, "is one of the most common letters!")

else:
    print("Incorrect!")
    letter = input("Name one of the most common letters in wheel of fortune puzzles: ")


input("\n\nPress the enter key to exit:")

Output is:

Name one of the most common letters in wheel of fortune puzzles: j
Incorrect!
Name one of the most common letters in wheel of fortune puzzles: r


Press the enter key to exit:

Answer 1

I would write something like this:

# Assumes Python 3
# Python 2: Use `raw_input` instead of input

common_letters = 'rstlne'
prompt = "Name one of the most common letters in wheel of fortune puzzles: "

while True:
    letter = input(prompt).strip()
    if letter in common_letters:
        print(letter, "is one of the most common letters!")
        break
    else:
        print("Incorrect!")
        answer = input('Type "end" to exit: ')
        if answer.strip() == 'end':
            break

There are a few thing I changed:

1. Instead of that many if statements I used if letter in common_letters:. This allows you to just add ore remove another letter to/from common_letters.

2. I use input(prompt).strip()to strip of extra white space.

3. I use a while True loop to repeat the question over and over again if no common letter was entered. The break terminates this loop, i.e. the progam is finished.