| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [pron] be [v-ing] [prep] | 5357 |
|
| 2 | [pron] had be [v-ing] [prep] | 1017 |
|
| 3 | [subord] [pron] had be [prep] | 530 |
|
| 4 | [subord] [pron] had be [v-ing] | 402 |
|
