| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] not [adv] | 14027 |
|
| 2 | [is] not [adv prt] | 305 |
|
| 3 | [is] [adv] back | 107 |
|
| 4 | [be] not back | 38 |
|
| 5 | [is] [not/n't] back | 24 |
|
| 6 | [is] not back | 24 |
|
| 7 | [is] not back | 21 |
|
