| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a [adj] [noun pl] [noun] | 526 |
|
| 2 | introduce a [adj] [noun] [noun] | 170 |
|
| 3 | introduce [art] [adj] [noun pl] [noun] | 21 |
|
| 4 | introduce a [adj] [noun pl] [noun] | 15 |
|
