| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] [det] a [noun] | 772 |
|
| 2 | [vb pp] [prep] [det] a [noun sg] | 769 |
|
| 3 | [verb] [prep] [det] a system | 13 |
|
| 4 | [vb pp] [prep] [det] [art] system | 11 |
|
| 5 | [vb pp] [prep] [det] a system | 11 |
|
| 6 | [vb pp] [prep] [det] [art] system | 11 |
|
| 7 | [vb pp] [prep] [det] a system | 11 |
|
| 8 | [vb pp] [prep] [adj] a system | 11 |
|
| 9 | [vb pp] [prep] [det] a system | 11 |
|
