| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but it is [adv] | 2682 |
|
| 2 | but it is [adv] | 1658 |
|
| 3 | [conj] it is often | 213 |
|
| 4 | but it [be] often | 40 |
|
| 5 | but it be often | 40 |
|
| 6 | but it [is] often | 32 |
|
| 7 | but [pron] is often | 32 |
|
| 8 | but it is often | 26 |
|
