MEDIUM SHADE
LOWER FIVE EIGHTHS BLOCK
LOWER SEVEN EIGHTHS BLOCK
LEFT THREE EIGHTHS BLOCK
DARK SHADE
QUADRANT LOWER LEFT
QUADRANT LOWER RIGHT
QUADRANT UPPER LEFT AND LOWER LEFT AND LOWER RIGHT
QUADRANT UPPER RIGHT
QUADRANT UPPER RIGHT AND LOWER LEFT
QUADRANT UPPER RIGHT AND LOWER LEFT AND LOWER RIGHT