| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] it [is] [v-ing] | 330 |
|
| 2 | [vb base] what it [is] | 319 |
|
| 3 | [vb base] what [is] [v-ing] | 233 |
|
| 4 | what it [is] [v-ing] | 142 |
|
