| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] to [art] | 3492 |
|
| 2 | is [v-ing] [prep] [art] | 3060 |
|
| 3 | [be] [v-ing] to [art] | 2631 |
|
| 4 | be [v-ing] to [art] | 2631 |
|
| 5 | [is] [v-ing] to [art] | 495 |
|
