class_docstr: Implements the Paice-Husk stemming algorithm.
      
code: def first_vowel(self, word):
      vp = min([p for p in [word.find(v) for v in "aeiou"] if p > -1])
      yp = word.find("y")
      if yp > 0 and yp < vp:
          return yp
      return vp
  
file_path: whoosh/src/whoosh/lang/paicehusk.py
imports: import re
  from collections import defaultdict
label_desc: Use image node_id 3 for calling the PaiceHuskStemmer obj's underlying member method code with example usage: obj.first_vowel(word) and returns: vp, yp