| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the [noun] must be [adj] | 435 |
|
| 2 | the system [vb mod] be [adj] | 36 |
|
| 3 | the system [modal v] be [adj] | 36 |
|
| 4 | the system must be [adj] | 14 |
|
| 5 | [art] system must be [adj] | 14 |
|
| 6 | [art] system must be [adj] | 14 |
|
| 7 | the system must be [adj] | 12 |
|
| 8 | the system must be [adj] | 12 |
|
| 9 | the system must [be] [adj] | 12 |
|
| 10 | the system must be [adj] | 12 |
|
| 11 | the system must [be] [adj] | 12 |
|
