def p_arith_for_command(p):
    """arith_for_command : FOR ARITH_FOR_EXPRS list_terminator newline_list DO compound_list DONE
                         | FOR ARITH_FOR_EXPRS list_terminator newline_list LEFT_CURLY compound_list RIGHT_CURLY
                         | FOR ARITH_FOR_EXPRS DO compound_list DONE
                         | FOR ARITH_FOR_EXPRS LEFT_CURLY compound_list RIGHT_CURLY"""
    raise NotImplementedError('arithmetic for')
