You are given a code:

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

Can you predict the output of `main_solution("upcuqcbppt")` 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": "upcuqcbppt"}, "ref_output": "m\u00abcur\u00bbe\u00abepm\u00bbm\u00abccr\u00bbe\u00abeum\u00bb\u00abq\u00bb\u00abc\u00bb\u00abb\u00bb\u00abp\u00bb\u00abp\u00bb\u00abt\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_1('mcreem', 2), func_15(x))", "funcname": "main_solution"}
rule