| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that [was/were] used [prep] | 44 |
|
| 2 | that was used [prep] | 26 |
|
| 3 | that were used [prep] | 18 |
|
| 4 | that [was/were] used in | 16 |
|
| 5 | that [was/were] used for | 15 |
|
| 6 | that [was/were] used by | 7 |
|
