| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] be [indef pn] [prep] | 817 |
|
| 2 | [noun sg] be [indef pn] [prep] | 593 |
|
| 3 | system [be] [indef pn] [prep] | 10 |
|
| 4 | system be [indef pn] [prep] | 10 |
|
| 5 | system be [indef pn] [prep] | 10 |
|
| 6 | system be [pron] [prep] | 10 |
|
