| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [be] [v-ing] a | 435 |
|
| 2 | [prep] [be] a good | 283 |
|
| 3 | [prep] [v-ing] a good | 165 |
|
| 4 | [be] [v-ing] a good | 15 |
|
