| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adj] [prep] be sure | 44 |
|
| 2 | it [be] [adj] [prep] [be] sure | 44 |
|
| 3 | it be [adj] [prep] [be] sure | 44 |
|
| 4 | it [be] [adj] to [be] sure | 44 |
|
| 5 | it [is] [adj] [prep] [be] sure | 34 |
|
| 6 | it is [adj] [prep] [be] sure | 27 |
|
| 7 | it [be] difficult [prep] [be] sure | 17 |
|
| 8 | it was [adj] [prep] [be] sure | 10 |
|
| 9 | it [was/were] [adj] [prep] [be] sure | 10 |
|
| 10 | it [be] impossible [prep] [be] sure | 9 |
|
| 11 | it [be] hard [prep] [be] sure | 9 |
|
| 12 | it 's [adj] [prep] [be] sure | 7 |
|
