| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [was/were] [adv] [prep] a | 67 |
|
| 2 | [was/were] [adv] used [prep] a | 60 |
|
| 3 | [noun prp] [was/were] [adv] used [prep] | 20 |
|
| 4 | [noun prp] [was/were] used [prep] a | 10 |
|
