No | Pattern | Freq | Relations |
---|---|---|---|
1 | has been [vb pp] for many years | 24 | |
2 | have been [vb pp] for many years | 12 | |
3 | had been [vb pp] for many years | 11 | |
4 | have been used for many years | 11 | |
5 | have been known for many years | 10 |
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