| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [vb pp] | 3866 |
|
| 2 | is [adv] frequently [vb pp] | 54 |
|
| 3 | it is frequently [vb pp] | 39 |
|
| 4 | it is [adv] frequently | 17 |
|
