| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [is] to introduce a [adj] | 11 |
|
| 2 | [noun sg] [is] to introduce a [adj] | 9 |
|
| 3 | [is] to introduce a [adj] [noun] | 16 |
|
| 4 | [is] to introduce a [adj] [noun sg] | 15 |
|
