| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] had [been] [v-ing] [prep] | 133 |
|
| 2 | that had [been] [v-ing] [prep] | 57 |
|
| 3 | [noun pl] that had [been] [v-ing] | 25 |
|
| 4 | [noun pl] that had [been] [prep] | 13 |
|
