| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is [prep] [v-ing] | 217 |
|
| 2 | [vb base] [conj] it is [prep] | 66 |
|
| 3 | [vb base] [conj] it is [v-ing] | 17 |
|
| 4 | [vb base] it is [prep] [v-ing] | 16 |
|
