You are given a code:

def main_solution(x):
    return ('pwgi' + 'rse')

Can you predict the output of `main_solution("pdjyw")` 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": "pdjyw"}, "ref_output": "pwgirse", "ref_code": "def main_solution(x):\n    return ('pwgi' + 'rse')", "funcname": "main_solution"}
rule