def __insert_frond_RF(d_w, d_u, dfs_data):
<EOL>dfs_data['<STR_LIT>'].append( (d_w, d_u) )<EOL>dfs_data['<STR_LIT>']['<STR_LIT:r>'] += <NUM_LIT:1><EOL>dfs_data['<STR_LIT>'] = '<STR_LIT>'<EOL>
Encapsulates the process of inserting a frond uw into the right side frond group.