svoid checkSuffixTreeWithRandomStrings() {
  Random random = repeatableRandomizer();
  for (int n = 100; n <= 2000000; n *= 2) {
    print(n);
    S text = randomAB(n, random);
    checkSuffixTreeSearch(text, "ab");
    checkSuffixTreeSearch(text, "a");
    checkSuffixTreeSearch(text, "baba");
  }
}