| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [prep] | 79530 |
|
| 2 | [noun prp] [be] [v-ing] | 19186 |
|
| 3 | [noun prp] [be] [prep] | 10149 |
|
| 4 | [noun prp] [v-ing] [prep] | 3036 |
|
