| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] must [adv] have [been] | 16 |
|
| 2 | [conj] must [adv] have been | 16 |
|
| 3 | [conj] must [adv] have be | 16 |
|
| 4 | [conj] must [adv] have [be] | 16 |
|
| 5 | and must [adv] have [be] | 12 |
|
| 6 | [coord] must [adv] have [be] | 12 |
|
| 7 | and must [adv] have [be] | 12 |
|
| 8 | [conj] must not have [be] | 10 |
|
| 9 | [conj] must [not/n't] have [be] | 10 |
|
| 10 | [conj] must not have [be] | 10 |
|
| 11 | [conj] must [adv] have [be] | 6 |
|
