| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | as [art] [noun sg] system | 32 |
|
| 2 | as the [noun sg] system | 23 |
|
| 3 | as the [noun sg] system | 23 |
|
| 4 | as a [noun sg] system | 9 |
|
| 5 | as a [noun sg] system | 6 |
|
