import random


keywords = ["screen", "cracked", "wet", "display", "button", "volume", "speakers", "sound"]

while True:
    try:
        help = input("What is wrong with your phone? ")
        break
    except ValueError:
        print ("Error")

listed = help.split()
final = ""

for i in range (len(listed)):
    if listed[i] in keywords:
        final += listed[i] + " "
print (final)