function getPerm(A, good)
{
while (true)
{
  wrong = 0;
  console.log(A);
  notA = A.map(x => x == good ? wrong : good);

  lIndex = A.lastIndexOf(good);
  if (lIndex != A.length - 1)
  {
        temp = A[lIndex];
        A[lIndex]=A[lIndex+1];
        A[lIndex+1]=temp;
  }
  else
  {
    lIndex0 = notA.lastIndexOf(good);
    tIndex1 = A.lastIndexOf(good, lIndex0);
    if (tIndex1 == -1 || lIndex0 == -1)
      break;
    else
    {
      A[tIndex1] = wrong;
      A[tIndex1+1] = good;
      for (let i=1; i<A.length - lIndex0; ++i)
      {
        temp= A[tIndex1+i+1];
        A[tIndex1+i+1] = A[lIndex0+i];
        A[lIndex0+i] = temp;
      }
    }
  }
}
}