| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what was going on [prep] | 129 |
|
| 2 | what was go on [prep] | 129 |
|
| 3 | what was [v-ing] on [prep] | 129 |
|
| 4 | what was [verb] on [prep] | 129 |
|
| 5 | what was [verb] on in | 78 |
|
| 6 | what was [verb] on at | 13 |
|
| 7 | what was [verb] on inside | 8 |
|
| 8 | what was [verb] on around | 6 |
|
| 9 | what was [verb] on behind | 5 |
|
