| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | only if it [is] [verb] | 27 |
|
| 2 | only if it [is] [verb] | 27 |
|
| 3 | only if it is [verb] | 26 |
|
| 4 | only if it [is] [vb pp] | 26 |
|
