You are given a code:

def main_solution(x):
    return (func_15('nbhbdb') + func_13(x, '_'))

Can you predict the output of `main_solution("tjscqwm")` 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": "tjscqwm"}, "ref_output": "\u00abn\u00bb\u00abb\u00bb\u00abh\u00bb\u00abb\u00bb\u00abd\u00bb\u00abb\u00bbt_j_s_c_q_w_m", "ref_code": "def main_solution(x):\n    return (func_15('nbhbdb') + func_13(x, '_'))", "funcname": "main_solution"}
rule