| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but if it [is] [verb] | 34 |
|
| 2 | but if it [is] [vb pp] | 23 |
|
| 3 | but if it is [verb] | 23 |
|
| 4 | but if it 's [verb] | 11 |
|
| 5 | but if it [is] [v-ing] | 8 |
|
