| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [v-ing] | 2521 |
|
| 2 | it is [num] | 1027 |
|
| 3 | is [v-ing] [num] | 366 |
|
| 4 | it [v-ing] [num] | 9 |
|
