| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] is | 24134 |
|
| 2 | [v-ing] [be] | 7462 |
|
| 3 | [v-ing] be | 7450 |
|
| 4 | [v-ing] [is] | 3365 |
|
