 }
 
 BitsetTests.test("Word.makeIterator()") {
-  typealias Word = _Bitset.Word
+  typealias Word = _UnsafeBitset.Word
   expectEqual(Array(Word(0)), [])
   expectEqual(Array(Word(1)), [0])
   expectEqual(Array(Word(2)), [1])

}

BitsetTests.test("Word.uncheckedInsert(_:)") {
  typealias Word = _Bitset.Word
  var word = Word(0)
  for i in 0 ..< Word.capacity {
    expectFalse(word.uncheckedContains(i))

}

BitsetTests.test("Word.count") {
  typealias Word = _UnsafeBitset.Word
  var word = Word(0)
  for i in 0 ..< Word.capacity {
    expectEqual(word.count, i)
