| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [prep] be used for | 14 |
|
| 2 | [was/were] to be use for | 14 |
|
| 3 | [was/were] [prep] be use for | 14 |
|
| 4 | was [prep] be use for | 10 |
|
