| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it must have be | 33 |
|
| 2 | [subord] it must have [be] | 33 |
|
| 3 | [subord] it must have [be] | 33 |
|
| 4 | [subord] it must have been | 33 |
|
| 5 | [subord] it must have [been] | 33 |
|
| 6 | so it must have [be] | 10 |
|
| 7 | though it must have [be] | 5 |
|
