You are given a code:

def main_solution(x):
    return (func_17('dmrw') + func_13('qwnn', '_'))

Can you predict the output of `main_solution("iwawmdizqu")` 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": "iwawmdizqu"}, "ref_output": "wrmdq_w_n_n", "ref_code": "def main_solution(x):\n    return (func_17('dmrw') + func_13('qwnn', '_'))", "funcname": "main_solution"}
rule