svoid test_gazelle_deepReplaceFullPhrases() {
  assertEqualsVerbose("hello (people of the wide) world",
    gazelle_deepReplaceFullPhrases(litcimap("whole wide" := "wide"),
      "hello (people of the (whole wide)) world"));
      
  // no replacement of single word
  assertEqualsVerbose("hello world",
    gazelle_deepReplaceFullPhrases(litcimap("world" := "big world"),
      "hello world"));
}