| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be often [adv] possible [to-vb] | 7 |
|
| 2 | is often [adv] possible [to-vb] | 6 |
|
| 3 | be often not possible [to-vb] | 5 |
|
| 4 | be often [not/n't] possible [to-vb] | 5 |
|
| 5 | be often not possible [to-vb] | 5 |
|
