You are given a code:

def main_solution(x):
    return func_20(func_15(x), func_5('zordwk', 'tdkl'))

Can you predict the output of `main_solution("fecphaj")` 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": "fecphaj"}, "ref_output": "\u00abtfd\u00bbk\u00ablez\u00bbo\u00abrcd\u00bbw\u00abkp\u00bb\u00abh\u00bb\u00aba\u00bb\u00abj\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_15(x), func_5('zordwk', 'tdkl'))", "funcname": "main_solution"}
rule