| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] [modal v] be [vb pp] | 912 |
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| 2 | [Wh det] [modal v] be [vb pp] at | 180 |
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[prep] [Wh det] [modal v] be [vb pp] at Next page
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