| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when it [is] [verb] [noun] | 10 |
|
| 2 | when it [is] [verb] [noun] | 10 |
|
| 3 | when it is [verb] [noun] | 9 |
|
| 4 | when it [is] [v-ing] [noun] | 6 |
|
