| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [vb infin] [art] [noun sg] system | 15 |
|
| 2 | not [vb infin] [art] [noun] system | 15 |
|
| 3 | not [vb infin] the [noun] system | 10 |
|
| 4 | not [vb infin] the [noun] system | 10 |
|
| 5 | not [vb infin] a [noun] system | 5 |
|
