| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | were [verb] [prep] the [num ord] | 424 |
|
| 2 | be introduce [prep] the [num ord] | 36 |
|
| 3 | [be] introduce [prep] the [num ord] | 36 |
|
| 4 | were introduce [prep] the [adj] | 35 |
|
| 5 | [was/were] introduce [prep] the [num ord] | 22 |
|
| 6 | were introduce [prep] the [num ord] | 8 |
|
| 7 | were introduce [prep] [art] [num ord] | 8 |
|
| 8 | were introduce [prep] [art] [num ord] | 8 |
|
| 9 | were introduce [prep] the [num ord] | 8 |
|
