code: def _convert_number_to_subscript(num: int) -> str:
      """
      Converts number into subscript.
  
      >>> signs = ["a", "a1", "be2", "bad3", "buru14"]
      >>> [_get_number_from_sign(s)[1] for s in signs]
      [0, 1, 2, 3, 14]
      """
  
      subscript = ""
      for character in str(num):
          subscript += chr(0x2080 + int(character))
      return subscript
  
file_path: cltk/src/cltk/text/akk.py
imports: import re
  from typing import List, Tuple
  from unicodedata import normalize
label_desc: Use image node_id 2 for calling a global function with example usage: _convert_number_to_subscript(num) and returns: subscript