Write a regular expression that will find all occurrences of: a. regular expression b. regular-expression c. regular:expression d. regular&expression in search_string code example

Example: Using the Python string below to perform a search using a regular expression that you create. search_string=’’’This is a string to search for a regular expression like regular expression or regular-expression or regular:expression or regular&expression’’’

match1 = re.findall(pattern, search_string)
if match1 != None:
  print(pattern + 'matched')
else:
  print(pattern + 'did not match')