| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] not always possible [to-vb] | 40 |
|
| 2 | [is] not always possible [to-vb] | 40 |
|
| 3 | is not always possible [to-vb] | 35 |
|
| 4 | 's not always possible [to-vb] | 5 |
|
