| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but do [not/n't] [verb] | 2231 |
|
| 2 | but do [not/n't] [vb infin] | 2220 |
|
| 3 | [conj] do [not/n't] require | 63 |
|
| 4 | but [verb] [not/n't] require | 9 |
|
| 5 | but do [adv] require | 9 |
|
| 6 | but do [not/n't] require | 9 |
|
