You are given a code:

def main_solution(x):
    return func_13(func_20('cyciu', 'dqmpzc'), '_')

Can you predict the output of `main_solution("xbgujgaqe")` 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": "xbgujgaqe"}, "ref_output": "c_d_y_q_c_m_i_p_u_z_c", "ref_code": "def main_solution(x):\n    return func_13(func_20('cyciu', 'dqmpzc'), '_')", "funcname": "main_solution"}
rule