| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was used [prep] a | 189 |
|
| 2 | [was/were] used as a | 160 |
|
| 3 | were used [prep] a | 51 |
|
| 4 | [was/were] used in a | 34 |
|
| 5 | [was/were] used for a | 20 |
|
| 6 | [was/were] used at a | 9 |
|
| 7 | [was/were] used by a | 6 |
|
| 8 | [was/were] used to a | 5 |
|
