code: def analyze_words(self, sentences):
      tags = [s.rows for s in sentences]
      tags = [t for sublist in tags for t in sublist]
      words = [t[0].lower() for t in tags if t[1] not in ["Np", "CH"]]
      noun_phrases = [t[0] for t in tags if t[1] == "Np"]
      counter = Counter(words)
      corpus_words = set(counter.keys())
      dictionary_words = set(dictionary.words)
      oov = corpus_words - dictionary_words
  
      print("Most common words:\n", counter.most_common(50))
      print("Corpus words: ", len(corpus_words))
      print("Noun phrases:\n", set(noun_phrases))
      print(
          "Short OOV words:\n",
          sorted([item for item in oov if len(item.split(" ")) < 3]),
      )
      print(
          "Long OOV words:\n",
          sorted([item for item in oov if len(item.split(" ")) >= 3]),
      )
      return counter
  
imports: import math
  from underthesea.dictionary import Dictionary
  from collections import Counter, defaultdict
  from underthesea.utils import logger
  from datetime import date, timedelta
  import pandas
label_desc: Use image node_id 6 for calling the UDAnalyzer obj's underlying member method code with example usage: obj.analyze_words(sentences) and returns: counter