| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] | 200716 |
|
| 2 | is [to-vb] | 21226 |
|
| 3 | is use | 4057 |
|
| 4 | be to use | 568 |
|
| 5 | [be] to use | 568 |
|
| 6 | [is] to use | 372 |
|
