| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] is often [adv] [vb pp] | 10 |
|
| 2 | [adj] is often [adv] [vb pp] | 8 |
|
| 3 | this is often [adv] [vb pp] | 7 |
|
| 4 | this is often [adv] [vb pp] | 7 |
|
