| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] a [adj] | 5278 |
|
| 2 | be [not/n't] a [adj] | 4095 |
|
| 3 | be [not/n't] [v-ing] [adj] | 1351 |
|
| 4 | be [not/n't] [v-ing] a | 366 |
|
| 5 | [not/n't] [v-ing] a [adj] | 218 |
|
