| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] is [indef pn] [prep] | 446 |
|
| 2 | [noun sg] is [indef pn] [prep] | 377 |
|
| 3 | system [be] [indef pn] [prep] | 10 |
|
| 4 | system be [indef pn] [prep] | 10 |
|
| 5 | system is [indef pn] [prep] | 9 |
|
| 6 | system [is] [indef pn] [prep] | 9 |
|
| 7 | system is [pron] [prep] | 9 |
|
