| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and a [adj] [noun] | 15321 |
|
| 2 | system and [adj] [noun] | 237 |
|
| 3 | system and a [noun] | 43 |
|
| 4 | system and a [adj] | 34 |
|
| 5 | system a [adj] [noun] | 18 |
|
