| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i must [verb] | 3850 |
|
| 2 | i must [vb infin] | 3847 |
|
| 3 | i [modal v] keep | 402 |
|
| 4 | [pron] must keep | 167 |
|
| 5 | [pers pn] must keep | 156 |
|
| 6 | i must keep | 21 |
|
| 7 | i must keep | 21 |
|
