diff --git a/main.py b/main.py
index 61bbe4c..dec2a9c 100644
--- a/main.py
+++ b/main.py
@@ -2,10 +2,11 @@
 a = "hello world"
 b = """hello
 world"""
-c = 'world hello'
+c = 'world hello!'
 d = '''world
-hello'''
-print(len(a))
-print(len(b))
-print(len(c))
-print(len(d))
+hello!'''
+e = "!"
+print("!" in a)
+print(e in b)
+print("!" in c)
+print(e in d)