You are given a code:

def main_solution(x):
    return func_20('jcaph', 'mag')

Can you predict the output of `main_solution("qmsea")` 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": "qmsea"}, "ref_output": "jmcaagph", "ref_code": "def main_solution(x):\n    return func_20('jcaph', 'mag')", "funcname": "main_solution"}
rule