| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which is [adv] [vb pp] | 1723 |
|
| 2 | which is [adv] [vb pp] | 1485 |
|
| 3 | [pron] is often [vb pp] | 551 |
|
| 4 | which [be] often [vb pp] | 183 |
|
| 5 | which be often [vb pp] | 183 |
|
| 6 | which is often [verb] | 95 |
|
| 7 | which [is] often [vb pp] | 94 |
|
| 8 | which is often [vb pp] | 94 |
|
