| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [to-vb] [adv] [adv] | 183 |
|
| 2 | is [verb] [Wh adv] [adv] | 32 |
|
| 3 | be [to-vb] [Wh adv] [adv] | 27 |
|
| 4 | [be] [to-vb] [Wh adv] [adv] | 27 |
|
| 5 | [is] [to-vb] [Wh adv] [adv] | 17 |
|
