| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [verb] | 176074 |
|
| 2 | [verb] [v-ing] | 71107 |
|
| 3 | [vb past] [v-ing] | 18442 |
|
| 4 | have [v-ing] | 167 |
|
