| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [v-ing] [conj] | 217 |
|
| 2 | it [is] [v-ing] [det] | 134 |
|
| 3 | it [is] [conj] [det] | 99 |
|
| 4 | [is] [v-ing] [conj] [det] | 96 |
|
