| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [v-ing] | 7370 |
|
| 2 | is [adv] clear | 738 |
|
| 3 | [adv] [v-ing] clear | 37 |
|
| 4 | is [v-ing] clear | 19 |
|
