| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have been [verb] [prep] | 320 |
|
| 2 | must have been [verb] [prep] | 318 |
|
| 3 | must have been [vb pp] [prep] | 238 |
|
| 4 | must have been [v-ing] [prep] | 81 |
|
| 5 | must have been [verb] by | 66 |
|
| 6 | must have been [verb] by | 66 |
|
| 7 | must have been [verb] in | 54 |
|
| 8 | must have been [verb] in | 54 |
|
| 9 | must have been [verb] for | 36 |
|
| 10 | must have been [verb] for | 36 |
|
| 11 | must have been [verb] to | 33 |
|
| 12 | must have been [verb] to | 33 |
|
| 13 | must have been [verb] on | 22 |
|
| 14 | must have been [verb] on | 22 |
|
| 15 | must have been [verb] from | 14 |
|
| 16 | must have been [verb] at | 14 |
|
| 17 | must have been [verb] from | 14 |
|
| 18 | must have been [verb] at | 14 |
|
| 19 | must have been [verb] with | 13 |
|
| 20 | must have been [verb] with | 13 |
|
| 21 | must have been write [prep] | 9 |
|
| 22 | must have been written [prep] | 9 |
|
| 23 | must have been think [prep] | 8 |
|
| 24 | must have been [verb] of | 7 |
|
| 25 | must have been [verb] as | 7 |
|
| 26 | must have been thinking [prep] | 7 |
|
| 27 | must have been do [prep] | 7 |
|
| 28 | must have been [verb] of | 7 |
|
| 29 | must have been [verb] as | 7 |
|
| 30 | must have been [verb] into | 6 |
|
