code: def trigraph(input):
      return _trigraph_pat.sub(
          lambda g: _trigraph_rep[g.group()[-1]], input
      )
  
imports: import sys
  import re
  import copy
  import time
  import os.path
label_desc: Use image node_id 8 for calling a global function with example usage: trigraph(input) and returns: _trigraph_pat