| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which is [adv] used | 83 |
|
| 2 | which [is] often used | 13 |
|
| 3 | which [is] also used | 12 |
|
| 4 | which [is] widely used | 8 |
|
| 5 | which [is] then used | 6 |
|
