| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had be [v-ing] [prep] | 1919 |
|
| 2 | and be [v-ing] [prep] | 891 |
|
| 3 | and had be [v-ing] | 68 |
|
| 4 | and had be [prep] | 66 |
|
