| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but if it do [adv] | 13 |
|
| 2 | but if it do not | 11 |
|
| 3 | but if it do [not/n't] | 11 |
|
| 4 | but if it do n't | 10 |
|
| 5 | but if it do [vb infin] | 8 |
|
| 6 | but if it do [verb] | 8 |
|
