You are given a code:

def main_solution(x):
    return ('afas' + 'zjyib')

Can you predict the output of `main_solution("nspjqrpd")` 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": "nspjqrpd"}, "ref_output": "afaszjyib", "ref_code": "def main_solution(x):\n    return ('afas' + 'zjyib')", "funcname": "main_solution"}
rule