go

while true do
  if (turtle.getFuelLevel()==0) then
  print("Out of fuel!")
    break
  end
  if (turtle.getItemCount(1)==0) then
    print("No Item!")
    break
   end
  turtle.forward()
  turtle.placeDown(1)
  if (turtle.getItemCount(1)==0) then
    print("Finished!")
    break
  end
end