| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and a [adj] [noun] | 18642 |
|
| 2 | system and [adj] [noun] | 264 |
|
| 3 | system and a [noun] | 43 |
|
| 4 | system and a [adj] | 40 |
|
| 5 | system a [adj] [noun] | 21 |
|
