| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has introduced a [noun] | 58 |
|
| 2 | [vb -s] introduced a [noun sg] | 50 |
|
| 3 | [vb -s] introduced a range | 11 |
|
| 4 | [vb -s] introduced a range | 11 |
|
| 5 | [vb -s] introduced a [n mass] | 5 |
|
