| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [that] it must [vb infin] | 10 |
|
| 2 | is [that] it must [verb] | 10 |
|
| 3 | is that it must [verb] | 10 |
|
| 4 | is [that] it must [verb] | 10 |
|
