| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | understand what be [v-ing] [adv] | 64 |
|
| 2 | [pers pn] what be [v-ing] [adv] | 58 |
|
| 3 | [pers pn] understand what be [v-ing] | 16 |
|
