code: def get_branches(aliases):
      
  
      ignore = ['pow', 'log10', 'sqrt', 'max']
      branches = []
      for k, v in aliases.items():
  
          tokens = re.sub('[\(\)\+\*\/\,\=\<\>\&\!\-\|]', ' ', v).split()
  
          for t in tokens:
  
              if bool(re.search(r'^\d', t)) or len(t) <= 3:
                  continue
  
              if bool(re.search(r'[a-zA-Z]', t)) and t not in ignore:
                  branches += [t]
  
      return list(set(branches))
docs: Get unique branch names from an alias dictionary.