| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [that] they do [not/n't] [verb] | 52 |
|
| 2 | [is] [that] they do [not/n't] [vb infin] | 52 |
|
| 3 | [is] [that] [pers pn] do [not/n't] know | 29 |
|
| 4 | [is] [that] [pron] do [not/n't] know | 29 |
|
| 5 | [is] [conj] they do [not/n't] know | 8 |
|
| 6 | [be] [that] they do [not/n't] know | 7 |
|
| 7 | [is] [that] they do [not/n't] know | 6 |
|
| 8 | [is] [that] they [vb base] [not/n't] know | 6 |
|
| 9 | [is] [that] they [verb] [not/n't] know | 6 |
|
| 10 | [is] [that] they do [not/n't] know | 6 |
|
| 11 | [is] [that] they do [adv] know | 6 |
|
| 12 | [is] [that] they do [not/n't] know | 6 |
|
