| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be often [verb] | 437 |
|
| 2 | it be often [vb pp] | 434 |
|
| 3 | it be [adv] forgotten | 41 |
|
| 4 | it be [adv] forgotten | 35 |
|
| 5 | [pron] be often forgotten | 17 |
|
| 6 | it be often forget | 13 |
|
| 7 | it be often forgotten | 13 |
|
| 8 | it [be] often forgotten | 13 |
|
