P 1P 2-3P 4-5P 6-7P 8-9P 10-11P 12-13P 14-15P 16-17P 18-19P 20-21P 22-23P 24-25P 26-27-1P 28-29P 30-31P 32-33P 34-35P 36-37P 38-39