| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] [prep] [art] [noun] | 4457 |
|
| 2 | has been [vb pp] [prep] [art] [noun] | 4220 |
|
| 3 | have been developed [prep] [art] [noun] | 87 |
|
| 4 | [verb] been developed [prep] [art] [noun] | 87 |
|
| 5 | [vb -s] been developed [prep] [art] [noun] | 42 |
|
| 6 | has [be] developed [prep] [art] [noun] | 40 |
|
| 7 | has been develop [prep] [art] [noun] | 40 |
|
| 8 | has be developed [prep] [art] [noun] | 40 |
|
| 9 | has [been] developed [prep] [art] [noun] | 40 |
|
| 10 | has been developed [prep] [art] [noun] | 40 |
|
