| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | during which [noun sg] | 224 |
|
| 2 | during which time | 168 |
|
| 3 | during which time | 168 |
|
| 4 | during which [noun prp] | 83 |
|
| 5 | during which [noun pl] | 50 |
|
| 6 | during which period | 16 |
|
| 7 | during which period | 16 |
|
