| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [v-ing] or [v-ing] | 10 |
|
| 2 | have [been] [v-ing] [v-ing] [prep] | 7 |
|
| 3 | [been] [v-ing] or [v-ing] [prep] | 6 |
|
