| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [vb pp] [prep] | 15645 |
|
| 2 | [been] [vb pp] [prep] a | 5754 |
|
| 3 | had [vb pp] [prep] a | 2473 |
|
| 4 | had [been] [vb pp] a | 311 |
|
| 5 | had [been] [prep] a | 255 |
|
