| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] the [noun sg] | 22024 |
|
| 2 | system the [noun sg] | 94 |
|
| 3 | system [was/were] the | 34 |
|
| 4 | system [was/were] [noun sg] | 7 |
|
