| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] be | 11457 |
|
| 2 | [prep] be [prep] | 10671 |
|
| 3 | [v-ing] [prep] [prep] | 1104 |
|
| 4 | [v-ing] be [prep] | 399 |
|
