| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] [be] [prep] | 74 |
|
| 2 | [prep] [v-ing] be [prep] | 74 |
|
| 3 | [prep] [verb] been [prep] | 31 |
|
| 4 | [prep] [v-ing] [been] [prep] | 28 |
|
| 5 | [prep] [v-ing] been [prep] | 28 |
|
