You are given a code:

def main_solution(x):
    return func_20((x + 'ekr'), func_15(x))

Can you predict the output of `main_solution("vlasfkme")` 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": "vlasfkme"}, "ref_output": "v\u00ablva\u00bbs\u00abflk\u00bbm\u00abeae\u00bbk\u00abrs\u00bb\u00abf\u00bb\u00abk\u00bb\u00abm\u00bb\u00abe\u00bb", "ref_code": "def main_solution(x):\n    return func_20((x + 'ekr'), func_15(x))", "funcname": "main_solution"}
rule