(function() {


var dict = {
  children: {
    A : { is_word: true, children: {} },
    B : { children: {
      A: { children: {
        R: { is_word: true, children: {
          K: { is_word: true, children: {} }
        }}
      }}
    }}
  }
};


function isWord(dictionary, letters) {
}



// Tests
var words = {
  A: true,
  AB: false,
  B: false,
  BA: false,
  BI: false,
  BAR: true,
  BARK: true,
  BART: false,
  CAT: false
};

for (var word in words) {
  console.log('Testing word ' + word);
  if (isWord(dict, word.split("")) !== words[word]) {
    console.log('Incorrect response about "' + word + '"');
    return false;
  }
}
console.log('> All tests pass');

})();