| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been [vb pp] [prep] school | 9 |
|
| 2 | [vb past] [been] [vb pp] [prep] school | 9 |
|
| 3 | had [been] [vb pp] [prep] school | 8 |
|
| 4 | [vb past] [been] [vb pp] [prep] school | 6 |
|
