You are given a code:

def main_solution(x):
    return func_20(('mass' + x), func_5('hsuuke', 'kxyv'))

Can you predict the output of `main_solution("jrmotvrlx")` 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": "jrmotvrlx"}, "ref_output": "mkaxsysvjhrsmuoutkverlx", "ref_code": "def main_solution(x):\n    return func_20(('mass' + x), func_5('hsuuke', 'kxyv'))", "funcname": "main_solution"}
rule