code: def make_unique(lst, sep="-"):
      seen = Counter()
      out = []
      counts = Counter(lst)
      for el in lst:
          out.append(
              el + ("" if counts[el] == 1 else sep + str(seen[el] + 1))
          )
          seen[el] += 1
      return out
  
label_desc: Use image node_id 1 for calling a global function with example usage: make_unique(lst, sep) and returns: out