| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be introduced for the [adj] [noun sg] | 10 |
|
| 2 | be introduced for the [adj] time | 6 |
|
| 3 | be introduced for the [adj] time | 6 |
|
| 4 | be introduced for the [num ord] [noun] | 6 |
|
| 5 | be introduced for the first [noun] | 6 |
|
| 6 | was introduced for the [adj] [noun] | 6 |
|
| 7 | be introduced for the first [noun] | 6 |
|
