| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [v-ing] [prep] [det] | 476 |
|
| 2 | have [been] [v-ing] on [prep] | 221 |
|
| 3 | [been] [v-ing] on [prep] [det] | 32 |
|
