| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be introduce the | 58 |
|
| 2 | be to introduce the | 23 |
|
| 3 | is introduce the | 21 |
|
| 4 | be introducing the | 18 |
|
| 5 | be introduced the | 14 |
|
| 6 | was introduce the | 10 |
|
| 7 | are introduce the | 9 |
|
| 8 | be introduce the | 9 |
|
| 9 | were introduce the | 7 |
|
