You are given a code:

def main_solution(x):
    return ('phcqpa' + 'ozt')

Can you predict the output of `main_solution("iwlno")` without writing any code? Please reason and put your final answer in the following json format: {"output": <your output>}, where <your output> should be the final string.
user
{"ref_input": {"x": "iwlno"}, "ref_output": "phcqpaozt", "ref_code": "def main_solution(x):\n    return ('phcqpa' + 'ozt')", "funcname": "main_solution"}
rule