code: def raise_modal_error(verb_phrase_doc):
      
      verb_phrase = verb_phrase_doc.text.lower()
      bad_strings = ['should had', 'should has', 'could had', 'could has', 'would '
              'had', 'would has'] ["should", "could", "would"]
      for bs in bad_strings:
          if bs in verb_phrase:
              raise('ShouldCouldWouldError')
docs: Given a verb phrase, raise an error if the modal auxilary has an issue
      with it