| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it can [adv] be doubted [conj] | 7 |
|
| 2 | it can [adv] be doubted that | 7 |
|
| 3 | it can [adv] be doubted [conj] | 7 |
|
| 4 | it can [adv] be doubted that | 7 |
|
| 5 | it can [adv] be doubted [that] | 7 |
|
| 6 | it can [not/n't] be doubted [conj] | 6 |
|
| 7 | it can not be doubted [conj] | 6 |
|
| 8 | it can not be doubted [conj] | 6 |
|
