| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] it must [vb infin] | 30 |
|
| 2 | [vb past] it must have | 20 |
|
| 3 | [vb past] it must have | 20 |
|
| 4 | said it must [verb] | 7 |
|
| 5 | thought it must [verb] | 5 |
|
| 6 | knew it must [verb] | 5 |
|
