| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has developed a [noun] | 96 |
|
| 2 | has developed a [noun sg] | 91 |
|
| 3 | has [vb pp] a system | 28 |
|
| 4 | has [verb] a system | 28 |
|
| 5 | have developed a system | 12 |
|
| 6 | [verb] developed a system | 12 |
|
| 7 | has developed a system | 7 |
|
| 8 | has developed [art] system | 7 |
|
| 9 | has develop a system | 7 |
|
| 10 | [vb -s] developed a system | 7 |
|
| 11 | has developed a system | 7 |
|
| 12 | has developed [art] system | 7 |
|
