| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] possible [to-vb] | 981 |
|
| 2 | is often possible [to-vb] | 40 |
|
| 3 | is often [adv] possible | 15 |
|
| 4 | often [adv] possible [to-vb] | 7 |
|
