| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [vb pp] [conj] [noun] | 239 |
|
| 2 | it is [adv] [vb pp] [conj] [noun] | 211 |
|
| 3 | it [be] often [vb pp] [conj] [noun] | 44 |
|
| 4 | [pron] is often [vb pp] [conj] [noun] | 44 |
|
| 5 | it be often [vb pp] [conj] [noun] | 44 |
|
| 6 | it is often [verb] [conj] [noun] | 43 |
|
| 7 | it is often [vb pp] [conj] [noun] | 43 |
|
| 8 | it [is] often [vb pp] [conj] [noun] | 43 |
|
