| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but it is [verb] | 427 |
|
| 2 | but it is [vb pp] | 334 |
|
| 3 | [conj] it is known | 147 |
|
| 4 | [coord] it is known | 29 |
|
| 5 | but [pron] is known | 23 |
|
| 6 | but it be known | 15 |
|
| 7 | but it [be] known | 15 |
|
| 8 | but it is know | 13 |
|
| 9 | but [pers pn] is known | 13 |
|
| 10 | but it is known | 13 |
|
| 11 | but it is known | 13 |
|
| 12 | but it [is] known | 13 |
|
