| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] [v-ing] [prep] | 6060 |
|
| 2 | [vb mod] [verb] [been] [prep] | 1268 |
|
| 3 | [vb mod] [verb] [v-ing] [prep] | 1139 |
|
| 4 | [vb mod] [verb] [been] [v-ing] | 1004 |
|
