| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have | 102695 |
|
| 2 | [modal v] have | 102695 |
|
| 3 | must [verb] | 34480 |
|
| 4 | must [vb infin] | 34451 |
|
| 5 | must have | 10224 |
|
| 6 | must have | 10071 |
|
