| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [verb] [art] | 20191 |
|
| 2 | has [vb pp] [art] | 19300 |
|
| 3 | [verb] introduced [art] | 314 |
|
| 4 | have introduced [art] | 312 |
|
| 5 | has introduce [art] | 178 |
|
| 6 | [vb -s] introduced [art] | 176 |
|
