code: def suffixArray(field: str) -> FrozenSet[str]:
      n = len(field) - 4
      if n > 0:
          return frozenset(field[i:] for i in range(0, n))
      else:
          return frozenset()
  
imports: import re
  from itertools import chain
  from math import copysign, floor, log10
  from typing import Any, FrozenSet, Sequence, Tuple, Union
  from doublemetaphone import doublemetaphone
  from dedupe.cpredicates import initials, ngrams, unique_ngrams
label_desc: Use image node_id 22 for calling a global function with example usage: suffixArray(field) and returns: frozenset, frozenset