| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but it [was/were] not | 544 |
|
| 2 | it [was/were] not [v-ing] | 96 |
|
| 3 | but it [was/were] [v-ing] | 89 |
|
| 4 | but [was/were] not [v-ing] | 11 |
|
