| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it do [adv] [vb infin] back | 14 |
|
| 2 | it do [not/n't] [verb] back | 13 |
|
| 3 | it do not [verb] back | 13 |
|
| 4 | it do n't [verb] back | 10 |
|
| 5 | it did [adv] [verb] back | 7 |
|
| 6 | it does [adv] [verb] back | 6 |
|
