| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] developed a [noun] | 238 |
|
| 2 | [verb] [verb] a system | 123 |
|
| 3 | [verb] [vb pp] a system | 59 |
|
| 4 | [verb] developed [art] system | 14 |
|
| 5 | [verb] developed [art] system | 14 |
|
| 6 | [verb] develop a system | 13 |
|
| 7 | [verb] developed a system | 12 |
|
