You are given a code:

def main_solution(x):
    return (func_13(x, '|') + func_13('hzutpl', '_'))

Can you predict the output of `main_solution("bzkylcaayt")` 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": "bzkylcaayt"}, "ref_output": "b|z|k|y|l|c|a|a|y|th_z_u_t_p_l", "ref_code": "def main_solution(x):\n    return (func_13(x, '|') + func_13('hzutpl', '_'))", "funcname": "main_solution"}
rule