No | Pattern | Freq | Relations |
---|---|---|---|
1 | has been [vb pp] for some time | 25 | |
2 | had been [vb pp] for some time | 19 | |
3 | have been known for some time | 16 | |
4 | have been [vb pp] for some time | 9 | |
5 | have been recognised for some time | 6 |
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