| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [prep] | 71140 |
|
| 2 | [noun prp] be [v-ing] | 19186 |
|
| 3 | [noun prp] be [prep] | 10146 |
|
| 4 | [noun prp] [v-ing] [prep] | 3019 |
|
