| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | need [to-vb] what [is] | 26 |
|
| 2 | need [to-vb] what [is] | 18 |
|
| 3 | need [to-vb] what is | 17 |
|
| 4 | need to know what [is] | 15 |
|
| 5 | need [to-vb] what 's | 9 |
|
