| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] were [verb] on a | 167 |
|
| 2 | [noun pl] [was/were] [verb] on a | 159 |
|
| 3 | [noun pl] [was/were] [vb pp] on a | 158 |
|
| 4 | [noun pl] [was/were] [verb] on an | 20 |
|
| 5 | [noun pl] [was/were] based on a | 19 |
|
| 6 | [noun pl] [was/were] [v-ing] on a | 19 |
|
| 7 | [noun pl] [was/were] base on a | 19 |
|
| 8 | [noun pl] was [verb] on a | 12 |
|
| 9 | samples [was/were] [verb] on a | 5 |
|
| 10 | [noun pl] [was/were] test on a | 5 |
|
| 11 | [noun pl] [was/were] make on a | 5 |
|
| 12 | [noun pl] [was/were] tested on a | 5 |
|
| 13 | [noun pl] [was/were] made on a | 5 |
|
