You are given a code:

def main_solution(x):
    return ('cqplr' + 'bcdyib')

Can you predict the output of `main_solution("rwlrphif")` 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": "rwlrphif"}, "ref_output": "cqplrbcdyib", "ref_code": "def main_solution(x):\n    return ('cqplr' + 'bcdyib')", "funcname": "main_solution"}
rule