You are given a code:

def main_solution(x):
    return func_20(func_1(x, 2), func_15('fhldap'))

Can you predict the output of `main_solution("bdfc")` 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": "bdfc"}, "ref_output": "b\u00abdff\u00bbc\u00abbhd\u00bbf\u00abcl\u00bb\u00abd\u00bb\u00aba\u00bb\u00abp\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_1(x, 2), func_15('fhldap'))", "funcname": "main_solution"}
rule