You are given a code:

def main_solution(x):
    return func_20(('olspuh' + 'lhnpb'), ('xxpg' + 'xsdrk'))

Can you predict the output of `main_solution("djxph")` 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": "djxph"}, "ref_output": "oxlxsppguxhsldhrnkpb", "ref_code": "def main_solution(x):\n    return func_20(('olspuh' + 'lhnpb'), ('xxpg' + 'xsdrk'))", "funcname": "main_solution"}
rule