T+E-1T+E-2T+E-3T+E-4T+E-5T+E-6T+E-7T+E-8T+E-9T+E-10T+E-11T+E-12T+E-13T+E-14T+E-15T+E-16T+E-17T+E-18T+E-19T+E-20