You are given a code:

def main_solution(x):
    return ('ymnism' + 'dijfh')

Can you predict the output of `main_solution("pdel")` 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": "pdel"}, "ref_output": "ymnismdijfh", "ref_code": "def main_solution(x):\n    return ('ymnism' + 'dijfh')", "funcname": "main_solution"}
rule