| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] for certain | 235 |
|
| 2 | know for certain | 110 |
|
| 3 | [vb pp] for certain | 54 |
|
| 4 | [vb infin] for certain | 48 |
|
| 5 | [vb past] for certain | 33 |
|
| 6 | [to-vb] for certain | 31 |
|
| 7 | [vb base] for certain | 29 |
|
| 8 | knew for certain | 27 |
|
| 9 | know for certain | 26 |
|
| 10 | [v-ing] for certain | 21 |
|
| 11 | know for certain | 21 |
|
| 12 | known for certain | 20 |
|
| 13 | [vb -s] for certain | 19 |
|
| 14 | say for certain | 15 |
|
| 15 | say for certain | 11 |
|
| 16 | knows for certain | 7 |
|
| 17 | account for certain | 7 |
|
| 18 | to know for certain | 6 |
|
| 19 | look for certain | 6 |
|
| 20 | provide for certain | 5 |
|
| 21 | allow for certain | 5 |
|
