| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] developed in [noun] | 30 |
|
| 2 | [verb] developed in recent [noun] | 9 |
|
| 3 | [verb] [been] in recent [noun] | 8 |
|
| 4 | [been] developed in recent [noun] | 6 |
|
| 5 | [verb] [been] developed in recent | 5 |
|
