iter.next().setStripNonLetters(ignoreNonLetters);
iter.next().setStripNonLetters(ignoreNonLetters);
((ISpellDictionary)iter.next()).setStripNonLetters(ignoreNonLetters);
iter.next().setStripNonLetters(ignoreNonLetters);
iter.next().setStripNonLetters(ignoreNonLetters);
((ISpellDictionary)iter.next()).setStripNonLetters(ignoreNonLetters);