You are given a code:

def main_solution(x):
    return func_5(('gpzkh' + 'wpaksl'), 'pvva')

Can you predict the output of `main_solution("dtzmozd")` 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": "dtzmozd"}, "ref_output": "pvvagpzkhwpaksl", "ref_code": "def main_solution(x):\n    return func_5(('gpzkh' + 'wpaksl'), 'pvva')", "funcname": "main_solution"}
rule