You are given a code:

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

Can you predict the output of `main_solution("jsmcuidk")` 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": "jsmcuidk"}, "ref_output": "j_j_a_s_g_m_c_c_c_u_g_i_d_k", "ref_code": "def main_solution(x):\n    return func_13(func_20('jagccg', x), '_')", "funcname": "main_solution"}
rule