| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] used [prep] the [num ord] | 15 |
|
| 2 | was used [prep] the [num ord] | 8 |
|
| 3 | were used [prep] the [num ord] | 7 |
|
| 4 | [was/were] used [prep] the first | 7 |
|
| 5 | [was/were] used for the [num ord] | 5 |
|
| 6 | [was/were] used in the [num ord] | 5 |
|
