| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] it is [verb] | 228 |
|
| 2 | [v-ing] [prep] it [verb] | 164 |
|
| 3 | [v-ing] it is [verb] | 50 |
|
| 4 | [v-ing] [prep] it is | 41 |
|
| 5 | [v-ing] [prep] is [verb] | 24 |
|
