| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] it 's [v-ing] | 279 |
|
| 2 | [vb base] [Wh det] 's [v-ing] | 161 |
|
| 3 | [vb base] [Wh det] it 's | 135 |
|
| 4 | [Wh det] it 's [v-ing] | 98 |
|
