| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [adv] [adv] | 1314 |
|
| 2 | [v-ing] [verb] [adv] [adv] | 403 |
|
| 3 | is [v-ing] [adv] [adv] | 389 |
|
| 4 | is [v-ing] [verb] [adv] | 213 |
|
