| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [v-ing] [prep] | 2418 |
|
| 2 | which [be] [v-ing] [prep] | 499 |
|
| 3 | which it [be] [prep] | 79 |
|
| 4 | which it [be] [v-ing] | 74 |
|
