| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] what [pers pn] | 1639 |
|
| 2 | what [pers pn] must | 258 |
|
| 3 | [v-ing] [pers pn] must | 99 |
|
| 4 | [v-ing] what must | 9 |
|
