| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [indef pn] [Wh pn] has been [v-ing] [prep] | 5 |
|
| 2 | [indef pn] who has been [v-ing] [prep] | 5 |
|
| 3 | [indef pn] who has been [v-ing] [prep] | 5 |
|
