| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be [verb] and | 881 |
|
| 2 | have be [vb pp] and | 833 |
|
| 3 | [verb] be introduced and | 18 |
|
| 4 | have be introduced [conj] | 18 |
|
| 5 | have be introduced and | 18 |
|
| 6 | [vb base] be introduced and | 11 |
|
| 7 | have be introduce and | 11 |
|
| 8 | have [be] introduced and | 11 |
|
