| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be impossible | 1564 |
|
| 2 | it is impossible | 811 |
|
| 3 | it was impossible | 561 |
|
| 4 | it 's impossible | 181 |
|
| 5 | it be impossible | 6 |
|
