| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] be difficult [prep] [be] sure | 17 |
|
| 2 | [pron] [be] difficult [prep] [be] sure | 17 |
|
| 3 | [pron] was [adj] [prep] [be] sure | 11 |
|
| 4 | [pron] was difficult [prep] [be] [adj] | 10 |
|
| 5 | [pron] was [adj] [prep] [be] sure | 10 |
|
| 6 | [pron] was difficult [prep] [be] [adj] | 10 |
|
| 7 | [pron] was difficult [prep] [be] sure | 5 |
|
| 8 | [pron] was difficult [prep] [be] sure | 5 |
|
| 9 | [pron] was difficult [prep] [be] sure | 5 |
|
| 10 | [pron] [was/were] difficult [prep] [be] sure | 5 |
|
