| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [v-ing] to | 338 |
|
| 2 | [Wh det] is [adv] [v-ing] | 333 |
|
| 3 | [Wh det] is [v-ing] to | 161 |
|
| 4 | [Wh det] is [adv] to | 33 |
|
