| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and a [noun] [noun sg] | 4685 |
|
| 2 | system and [noun] [noun sg] | 130 |
|
| 3 | system and a [noun] | 43 |
|
| 4 | system and a [noun sg] | 38 |
|
