No | Pattern | Freq | Relations |
---|---|---|---|
1 | [was/were] [vb pp] at a time | 42 |
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2 | [was/were] [vb pp] at a time | 42 |
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3 | was [vb pp] at a time | 28 |
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4 | were [vb pp] at a time | 14 |
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