| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] [prep] | 5721 |
|
| 2 | [is] [adv] [v-ing] [prep] | 2868 |
|
| 3 | it [is] [adv] [v-ing] | 2153 |
|
| 4 | it [is] [v-ing] [prep] | 1650 |
|
| 5 | it [adv] [v-ing] [prep] | 41 |
|
