| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] been [vb pp] in [det] chapter | 5 |
|
| 2 | [adv] [been] [vb pp] in [det] chapter | 5 |
|
| 3 | [adv] [been] [vb pp] in this chapter | 5 |
|
