| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [pers pn] [vb base] been [v-ing] | 231 |
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| 2 | [pers pn] [vb base] been [v-ing] at | 103 |
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what [pers pn] [vb base] been [v-ing] at Next page
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