| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [vb pp] on | 903 |
|
| 2 | had [been] [vb pp] a | 348 |
|
| 3 | [been] [vb pp] on a | 321 |
|
| 4 | had [vb pp] on a | 198 |
|
| 5 | had [been] on a | 39 |
|
