code: def decompose_jamo(compound):
      
      if len(compound) != 1:
          raise TypeError("decompose_jamo() expects a single character,",
                          "but received", type(compound), "length",
                          len(compound))
      if compound not in JAMO_COMPOUNDS:
          # Strict version:
          # raise TypeError("decompose_jamo() expects a compound jamo,",
          #                 "but received", compound)
          return compound
      return _JAMO_TO_COMPONENTS.get(compound, compound)
docs: Return a tuple of jamo character constituents of a compound.
      Note: Non-compound characters are echoed back.
  
      WARNING: Archaic jamo compounds will raise NotImplementedError.