D7rD7vD8rD8vE1rE1vE2rE2vE3rE3vE4rE4vE5rE5vE6rE6vE7rE7vE8rE8vF1rF1vF2rF2vF3rF3vF4rF4vF5rF5vF6rF6vF7rF7vF8rF8vG1rG1vG2rG2vG3rG3vG4rG4vG5rG5vG6rG6vG7rG7vG8rG8vH1rH1vH2rH2vH3rH3vH4rH4vH5rH5vH6rH6vH7rH7vH8rH8vI1rI1vI2rI2vI3rI3vI4rI4vI5rI5vI6rI6vI7rI7vI8rI8vK1rK1vK2rK2vK3rK3vK4rK4vK5rK5vK6rK6vK7rK7vK8rK8vL1rL1vL2rL2vL3rL3vL4rL4vL5rL5vL6rL6vL7rL7vL8rL8vM1rM1vM2rM2vM3rM3vM4rM4vM5rM5vM6rM6vM7rM7vM8rM8vN1rN1vN2rN2vN3rN3vN4rN4vN5rN5vN6rN6vN7rN7vN8rN8vO1rO1vO2rO2vO3rO3vO4rO4vO5rO5vO6rO6vO7rO7vO8rO8vP1rP1vP2rP2vP3rP3vP4rP4vP5rP5vP6rP6vP7rP7vP8rP8vQ1rQ1vQ2rQ2vQ3rQ3vQ4rQ4vQ5rQ5vQ6rQ6vQ7rQ7vQ8rQ8vR1rR1vR2rR2vR3rR3vR4rR4vR5rR5vR6rR6vR7rR7vR8rR8vS1rS1v