| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] [verb] in recent [noun] | 123 |
|
| 2 | [verb] [been] [vb pp] in recent [noun] | 107 |
|
| 3 | [verb] [been] developed in [adj] [noun] | 21 |
|
| 4 | [verb] [be] developed in recent [noun] | 5 |
|
| 5 | [verb] [been] developed [prep] recent [noun] | 5 |
|
| 6 | [verb] [been] develop in recent [noun] | 5 |
|
