| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | unless it is [verb] | 124 |
|
| 2 | [vb pp] it is [verb] | 50 |
|
| 3 | [vb pp] unless it is | 19 |
|
| 4 | [vb pp] unless it [verb] | 6 |
|
