| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [v-ing] [prep] | 24423 |
|
| 2 | is [adv] [prep] | 14514 |
|
| 3 | is [adv] [v-ing] | 9439 |
|
| 4 | is [v-ing] [prep] | 8820 |
|
