| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] [v-ing] [prep] | 6060 |
|
| 2 | [to-vb] [been] [verb] [prep] | 1591 |
|
| 3 | [to-vb] [be] [v-ing] [prep] | 67 |
|
| 4 | [to-vb] [been] [v-ing] [prep] | 55 |
|
