| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been develop [prep] [noun] | 12 |
|
| 2 | [vb past] been developed [prep] [noun] | 11 |
|
| 3 | [vb past] been develop [prep] [noun prp] | 6 |
|
| 4 | [vb past] been develop by [noun] | 5 |
|
| 5 | [vb past] been develop [prep] [noun sg] | 5 |
|
