code: def phonemes_to_label(phns, decoder):
      """Converts a batch of phoneme sequences (a single tensor)
      to a list of space-separated phoneme label strings,
      (e.g. ["T AY B L", "B UH K"]), removing any special tokens
  
      Arguments
      ---------
      phn: sequence
          a batch of phoneme sequences
  
      Returns
      -------
      result: list
          a list of strings corresponding to the phonemes provided"""
  
      phn_decoded = decoder(phns)
      return [" ".join(remove_special(item)) for item in phn_decoded]
  
imports: from functools import reduce
  from speechbrain.wordemb.util import expand_to_chars
  import speechbrain
  import torch
  import re
label_desc: Use image node_id 21 for calling a global function with example usage: phonemes_to_label(phns, decoder) and returns: unknown