def split_string(string_to_cut):
    cut_string = ''
    for i in range(2, len(string_to_cut), 3):
        cut_string += string_to_cut[i]
    return cut_string

a5bf9d09b59f9cab47490ac3b6f516893a9a0a63
<mask token>

def split_string(string_to_cut):
    cut_string = ''
    for i in range(2, len(string_to_cut), 3):
        cut_string += string_to_cut[i]
    return cut_string
