| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they had [been] [prep] | 124 |
|
| 2 | they had [been] [v-ing] [prep] | 108 |
|
| 3 | [conj] they had [been] [v-ing] | 98 |
|
| 4 | [conj] had [been] [v-ing] [prep] | 80 |
|
