| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but it [is] [verb] that | 139 |
|
| 2 | but it [is] [vb pp] that | 131 |
|
| 3 | [conj] it [is] known that | 62 |
|
| 4 | but it [be] known that | 12 |
|
| 5 | but [pron] [is] known that | 11 |
|
| 6 | but it [is] know that | 11 |
|
| 7 | but it [is] known that | 11 |
|
| 8 | but it [is] known [conj] | 11 |
|
| 9 | but it [is] known that | 11 |
|
| 10 | but [pers pn] [is] known that | 11 |
|
| 11 | but it [is] known [that] | 11 |
|
