| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what must [vb infin] | 103 |
|
| 2 | what must [verb] | 103 |
|
| 3 | what must [verb] | 103 |
|
| 4 | what must have | 75 |
|
| 5 | what must have | 75 |
|
| 6 | what must rank | 5 |
|
| 7 | what must rank | 5 |
|
| 8 | what must seem | 5 |
|
| 9 | what must happen | 5 |
|
| 10 | what must happen | 5 |
|
| 11 | what must seem | 5 |
|
