| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was introduce [prep] the [noun sg] | 78 |
|
| 2 | introduce [prep] the [num] [noun sg] | 27 |
|
| 3 | was [prep] the [num] [noun sg] | 16 |
|
| 4 | was introduce [prep] the [num] | 11 |
|
