| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [is] [v-ing] | 18092 |
|
| 2 | [noun sg] it [is] | 8395 |
|
| 3 | it [is] [v-ing] | 7295 |
|
| 4 | [noun sg] it [v-ing] | 9 |
|
