| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | on which [noun prp] be [verb] | 17 |
|
| 2 | on which [noun prp] was [verb] | 13 |
|
| 3 | on which [noun prp] be [v-ing] | 9 |
|
| 4 | on which [noun prp] be [vb pp] | 7 |
|
