LOWER THREE QUARTERS BLOCK
LOWER ONE QUARTER BLOCK
LOWER SEVEN EIGHTHS BLOCK
LEFT HALF BLOCK
LEFT ONE QUARTER BLOCK
LEFT ONE EIGHTH BLOCK
MEDIUM SHADE
QUADRANT LOWER LEFT
QUADRANT UPPER LEFT AND LOWER LEFT AND LOWER RIGHT
QUADRANT UPPER LEFT AND UPPER RIGHT AND LOWER LEFT
QUADRANT UPPER LEFT AND UPPER RIGHT AND LOWER RIGHT