| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not be [prep] [noun] | 563 |
|
| 2 | be easy [prep] [noun] | 67 |
|
| 3 | not be easy [prep] | 39 |
|
| 4 | not easy [prep] [noun] | 21 |
|
