| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] they [be] [v-ing] [prep] | 606 |
|
| 2 | [subord] they had [be] [prep] | 114 |
|
| 3 | they had [be] [v-ing] [prep] | 110 |
|
| 4 | [subord] they had [be] [v-ing] | 53 |
|
