<human>:  sort by a token in string.
<bot>: Here is a Python code to sort by a token in string

import string

def sort_by_token(string, token):
  """Sort a string by a token.

  Args:
    string (str): String to be sorted.
    token (str): Token to be used for sorting.

  Returns:
    Sorted string.
  """
  return sorted(string, key=lambda x: x.find(token))

# Enter the string
string ="blue bicycle"

# Calling the function
sorted_string = sort_by_token(string, 'a')

# Printing the result

#Remember to inspect code for bugs.