| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [to-vb] [is] | 2163 |
|
| 2 | [vb base] [to-vb] [is] | 1058 |
|
| 3 | need [to-vb] [is] | 227 |
|
| 4 | need [to-vb] [be] | 208 |
|
| 5 | need [verb] [is] | 190 |
|
