| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [prep] an [noun] | 1579 |
|
| 2 | not be [verb] [prep] [noun] | 1534 |
|
| 3 | not [verb] [prep] an [noun] | 305 |
|
| 4 | not be [verb] [prep] an | 145 |
|
