| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] have been [v-ing] [prep] | 1813 |
|
| 2 | which have been [v-ing] [prep] | 128 |
|
| 3 | which [noun] have been [v-ing] | 42 |
|
| 4 | which [noun] have been [prep] | 8 |
|
