| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] be | 1060 |
|
| 2 | [prep] [v-ing] [be] | 1060 |
|
| 3 | [prep] [verb] been | 396 |
|
| 4 | [prep] [v-ing] been | 304 |
|
| 5 | [prep] [v-ing] [been] | 304 |
|
