| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] not back | 38 |
|
| 2 | be not back | 38 |
|
| 3 | [is] not back | 21 |
|
| 4 | 's not back | 16 |
|
| 5 | [modal v] not back | 14 |
|
| 6 | [vb mod] not back | 14 |
|
| 7 | [am/are] not back | 12 |
|
| 8 | [verb] not back | 9 |
|
| 9 | do not back | 8 |
|
| 10 | 're not back | 7 |
|
| 11 | [adv] not back | 6 |
|
| 12 | [adv] not back | 6 |
|
| 13 | would not back | 5 |
|
| 14 | was not back | 5 |
|
| 15 | would not back | 5 |
|
| 16 | 'm not back | 5 |
|
| 17 | did not back | 5 |
|
| 18 | is not back | 5 |
|
| 19 | [vb past] not back | 5 |
|
| 20 | [was/were] not back | 5 |
|
| 21 | not [verb] back | 515 |
|
| 22 | not [vb infin] back | 226 |
|
| 23 | not [v-ing] back | 147 |
|
| 24 | not come back | 132 |
|
| 25 | not go back | 128 |
|
| 26 | not [vb pp] back | 76 |
|
| 27 | not coming back | 55 |
|
| 28 | not go back | 53 |
|
| 29 | not [to-vb] back | 53 |
|
| 30 | not going back | 50 |
|
