| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [is] [adv] a | 507 |
|
| 2 | which [is] [adv] a | 369 |
|
| 3 | [pron] [is] usually a | 175 |
|
| 4 | which [is] usually [art] | 25 |
|
| 5 | which [be] usually a | 18 |
|
| 6 | which [is] usually a | 12 |
|
