| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they must have been | 28 |
|
| 2 | [subord] they must have been | 13 |
|
| 3 | [verb] they must have been | 11 |
|
| 4 | [coord] they must have been | 9 |
|
| 5 | [noun] they must have been | 7 |
|
| 6 | that they must have been | 6 |
|
| 7 | that they must have been | 6 |
|
| 8 | [that] they must have been | 6 |
|
| 9 | [vb past] they must have been | 5 |
|
| 10 | [noun sg] they must have been | 5 |
|
| 11 | they must [adv] have been | 7 |
|
| 12 | they must [adv] have been | 7 |
|
| 13 | they must have been [verb] | 47 |
|
| 14 | they must have been [vb pp] | 29 |
|
| 15 | they must have been [adj] | 27 |
|
| 16 | they must have been [adv] | 24 |
|
| 17 | they must have been [adj] | 23 |
|
| 18 | they must have been [adv] | 21 |
|
| 19 | they must have been [v-ing] | 18 |
|
| 20 | they must have been [prep] | 9 |
|
| 21 | they must have been [prep] | 9 |
|
| 22 | they must have been in | 5 |
|
| 23 | they must have been in | 5 |
|
