| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] [prep] [det] year | 92 |
|
| 2 | have been [vb pp] [prep] [det] years | 82 |
|
| 3 | have been [vb pp] for [det] year | 73 |
|
| 4 | have been [vb pp] for [det] year | 73 |
|
| 5 | have been [vb pp] [prep] many year | 62 |
|
| 6 | has been [vb pp] [prep] [det] year | 39 |
|
| 7 | have been [vb pp] [prep] [det] year | 24 |
|
| 8 | had been [vb pp] [prep] [det] year | 22 |
|
| 9 | have been [vb pp] [prep] some year | 15 |
|
| 10 | have been known [prep] [det] year | 15 |
|
| 11 | have been used [prep] [det] year | 12 |
|
| 12 | have been [vb pp] over [det] year | 11 |
|
| 13 | have been [vb pp] over [det] year | 11 |
|
| 14 | have been [vb pp] [prep] [det] year | 10 |
|
| 15 | have been [vb pp] [prep] several year | 5 |
|
| 16 | have been established [prep] [det] year | 5 |
|
