| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is | 37027 |
|
| 2 | it is [v-ing] | 2521 |
|
| 3 | [conj] is [v-ing] | 1511 |
|
| 4 | [conj] it [v-ing] | 19 |
|
