| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not a [adj] [noun sg] | 4769 |
|
| 2 | a [adj] [noun sg] system | 1101 |
|
| 3 | not a [adj] system | 10 |
|
| 4 | not a [noun sg] system | 6 |
|
