| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | understand [Wh det] be go on | 25 |
|
| 2 | understand what be [verb] on | 25 |
|
| 3 | understand [Wh det] be [v-ing] on | 25 |
|
| 4 | understand [Wh det] be going on | 25 |
|
| 5 | understand [Wh det] be [verb] on | 25 |
|
| 6 | understand [Wh det] 's [verb] on | 11 |
|
| 7 | understand [Wh det] is [verb] on | 8 |
|
| 8 | understand [Wh det] was [verb] on | 6 |
|
