high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low
high | low