def _recode24(self, stem):
if stem[-<NUM_LIT:4>:-<NUM_LIT:3>] == '<STR_LIT:s>':<EOL><INDENT>return stem<EOL><DEDENT>return stem[:-<NUM_LIT:1>] + '<STR_LIT:s>'<EOL>
Return Lovins' conditional recode rule 24.

        Parameters
        ----------
        stem : str
            Word to stem

        Returns
        -------
        str
            Word stripped of suffix