You are given a code:

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

Can you predict the output of `main_solution("tphxvecoah")` 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": "tphxvecoah"}, "ref_output": "t\u00abpjh\u00bbx\u00abvpe\u00bbc\u00aboqa\u00bbh\u00abqyd\u00bbj\u00abp\u00bb", "ref_code": "def main_solution(x):\n    return func_20((x + 'qdj'), func_15('jpqyp'))", "funcname": "main_solution"}
rule