| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] have been [v-ing] [prep] | 2747 |
|
| 2 | which [pers pn] have been [v-ing] | 175 |
|
| 3 | which have been [v-ing] [prep] | 128 |
|
| 4 | which [pers pn] have been [prep] | 9 |
|
