| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was [adj] [prep] [art] | 11975 |
|
| 2 | was introduce [prep] [art] | 239 |
|
| 3 | was [adj] introduce [prep] | 46 |
|
| 4 | [adj] introduce [prep] [art] | 45 |
|
