| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that [ex0] must have been | 20 |
|
| 2 | that there must have [be] | 20 |
|
| 3 | that [ex0] must have [be] | 20 |
|
| 4 | that [ex0] must have be | 20 |
|
| 5 | that [ex0] must have [be] | 20 |
|
| 6 | that [ex0] must have [been] | 20 |
|
| 7 | that [ex0] must have [be] | 20 |
|
