| factors 11 22 33 | 12 13 23 |
| 0.0001< β < 1.0 | –1.0 < β < 1.0 |
| 0.5 < B < 15.0 | –15.0 < B < 15.0 |
| 0.001 < U < 0.3 | –0.3 < U < 0.3 |
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