| Both high and low pressure sides are low |
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BOTH HIGH AND LOW PRESSURE SIDES ARE LOW . |
| Both high and low pressure sides are high |
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BOTH HIGH AND LOW PRESSURE SIDES ARE HIGH . |
| High and low pressure sides are equal, high-pressure side is low |
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HIGH AND LOW PRESSURE SIDES ARE EQUAL, OR HIGH-PRESSURE SIDE IS LOW . |
| High-pressure side is high |
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HIGH-PRESSURE SIDE IS HIGH . |
| Low-pressure side is low |
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LOW-PRESSURE SIDE IS LOW . |
| Low-pressure side is high |
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LOW-PRESSURE SIDE IS HIGH . |