| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who has been [v-ing] [prep] [art] | 25 |
|
| 2 | who has [been] [v-ing] [prep] the | 20 |
|
| 3 | who has [been] [v-ing] for [art] | 8 |
|
| 4 | who has [been] [v-ing] on [art] | 8 |
|
