| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a system | 675 |
|
| 2 | developed a [noun] | 287 |
|
| 3 | [vb pp] a system | 76 |
|
| 4 | develop a system | 45 |
|
| 5 | developed [art] system | 19 |
|
| 6 | developed [art] system | 19 |
|
| 7 | developed a system | 16 |
|
