svoid checkSuffixTreeWithRandomStrings() {
  Random random = repeatableRandomizer();
  for (int n = 100; n <= 2000000; n *= 2) {
    print(n);
    S text = randomABC(n, random);
    SuffixTree tree = new(text);
    checkSuffixTreeSearch(tree, "abc");
    checkSuffixTreeSearch(tree, "a");
    checkSuffixTreeSearch(tree, "bac");
  }
}