| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] for [det] years [prep] | 19 |
|
| 2 | been [vb pp] for many year [prep] | 17 |
|
| 3 | been used for [det] year [prep] | 7 |
|
| 4 | been [vb pp] for [det] year in | 5 |
|
