| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [verb] been [v-ing] | 886 |
|
| 2 | which [verb] been [v-ing] | 361 |
|
| 3 | which they [verb] been | 163 |
|
| 4 | which they [verb] [v-ing] | 16 |
|
