| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [v-ing] [prep] [art] | 2210 |
|
| 2 | had [been] [v-ing] [prep] | 1917 |
|
| 3 | had [been] [prep] [art] | 1396 |
|
| 4 | had [been] [v-ing] [art] | 625 |
|
