human
3 string default bytes.
assistant
Here is a Python function to set default bytes for 3 string

import random

def get_default_bytes():
    """
    Returns a bytes object with 3 default strings
    """
    return b'abc' * 3

# Enter the 3 strings
a = 'a'
b = 'b'
c = 'c'

# Calling the function
print((get_default_bytes()))

#Example Output
# b'abcabcabc'

#Remember to inspect code for bugs.