| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] on [art] | 1294 |
|
| 2 | [v-ing] on [art] [num ord] | 137 |
|
| 3 | [was/were] [v-ing] [art] [num ord] | 107 |
|
| 4 | [was/were] on [art] [num ord] | 91 |
|
