| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [noun sg] systems [pron] | 28 |
|
| 2 | [noun sg] [noun] systems [Wh det] | 20 |
|
| 3 | [noun sg] [noun] systems which | 19 |
|
| 4 | [noun sg] [noun] systems which | 19 |
|
| 5 | [noun sg] [noun] systems [pers pn] | 7 |
|
