| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] introduced for the first time | 6 |
|
| 2 | be introduced for the first time | 6 |
|
| 3 | introduced for the first time [prep] | 7 |
|
| 4 | introduced for the first time [prep] | 7 |
|
