| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [v-ing] [art] | 598 |
|
| 2 | which [vb -s] been [v-ing] | 154 |
|
| 3 | which [vb -s] been [art] | 96 |
|
| 4 | which [vb -s] [v-ing] [art] | 58 |
|
