| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [be] [prep] | 10465 |
|
| 2 | [be] preparing [prep] | 178 |
|
| 3 | [prep] preparing [prep] | 76 |
|
| 4 | [prep] [be] preparing | 21 |
|
