| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun sg] which [vb mod] [vb infin] | 606 |
|
| 2 | system [prep] [noun sg] [vb mod] [vb infin] | 10 |
|
| 3 | system [prep] [noun sg] which [vb mod] | 9 |
|
