| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [verb] n't [been] able [to-vb] | 5 |
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| 2 | [Wh pn] [verb] n't [been] able [verb] | 5 |
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[Wh pn] [verb] n't [been] able (6) Next page
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