| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb past] [been] introduced into | 6 |
|
| 2 | [vb past] [been] introduced into [art] | 6 |
|
| 3 | [vb past] [been] introduced into [art] | 6 |
|
| 4 | [vb past] [been] introduced into the | 5 |
|
| 5 | [vb past] [been] introduced into the | 5 |
|
