| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [v-ing] [prep] | 1792 |
|
| 2 | this is [adv] [prep] | 273 |
|
| 3 | this is [v-ing] [prep] | 191 |
|
| 4 | this is [adv] [v-ing] | 116 |
|
| 5 | this [adv] [v-ing] [prep] | 7 |
|
