| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | introduce for the [adj] [noun sg] | 17 |
|
| 2 | introduced for the [adj] [noun sg] | 15 |
|
| 3 | introduce for the [adj] time | 12 |
|
| 4 | introduce for the first [noun sg] | 12 |
|
| 5 | introduce for the [num ord] [noun sg] | 12 |
|
| 6 | introduce for the first [noun sg] | 12 |
|
