| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] system needs to be | 9 |
|
| 2 | [noun sg] system needs to be | 8 |
|
| 3 | system needs to be [verb] | 10 |
|
| 4 | system needs to be [vb pp] | 10 |
|
