You are given a code:

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

Can you predict the output of `main_solution("zdld")` 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": "zdld"}, "ref_output": "z\u00abdzl\u00bbd\u00abldc\u00bbi\u00abbly\u00bbs\u00abd\u00bb", "ref_code": "def main_solution(x):\n    return func_20((x + 'lcibys'), func_15(x))", "funcname": "main_solution"}
rule