| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is [adv] [prep] | 435 |
|
| 2 | [conj] it is [adv] impossible | 72 |
|
| 3 | it is [adv] impossible [prep] | 48 |
|
| 4 | [conj] it is impossible [prep] | 41 |
|
