| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] for [det] year | 73 |
|
| 2 | have been [vb pp] for [det] years | 70 |
|
| 3 | have been [vb pp] for many year | 50 |
|
| 4 | has been [vb pp] for [det] year | 31 |
|
| 5 | had been [vb pp] for [det] year | 19 |
|
| 6 | have been [vb pp] for [det] year | 17 |
|
| 7 | have been known for [det] year | 15 |
|
| 8 | have been [vb pp] for some year | 15 |
|
| 9 | have been used for [det] year | 12 |
|
| 10 | have been [vb pp] for several year | 5 |
|
